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[PATCH] media: atomisp: replace shadow zoom structs with v4l2_rect and fix error paths

Karthikey D Kadati posted 1 patch 1 month ago 
.../media/atomisp/include/linux/atomisp.h     |  19 +--
.../staging/media/atomisp/pci/atomisp_cmd.c   | 144 ++++++++---------
.../staging/media/atomisp/pci/atomisp_ioctl.c | 147 +++++++++++++-----
3 files changed, 183 insertions(+), 127 deletions(-)
[PATCH] media: atomisp: replace shadow zoom structs with v4l2_rect and fix error paths
Posted by Karthikey D Kadati 1 month ago 
This patch addresses a TODO graduation blocker by removing private zoom
structures (`atomisp_zoom_point` and `atomisp_zoom_region`) in favor of
standard V4L2 types (`v4l2_rect`).

It also improves error propagation for IRQs and XNR configuration, ensuring
that failures are detected and reported. Additionally, it consolidates
memory allocation boilerplate into a safer helper function
(`atomisp_alloc_stat_bufs_list`) that includes a proper error-unwind path
to prevent memory leaks during partial allocation failures.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 .../media/atomisp/include/linux/atomisp.h     |  19 +--
 .../staging/media/atomisp/pci/atomisp_cmd.c   | 144 ++++++++---------
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 147 +++++++++++++-----
 3 files changed, 183 insertions(+), 127 deletions(-)

diff --git a/drivers/staging/media/atomisp/include/linux/atomisp.h b/drivers/staging/media/atomisp/include/linux/atomisp.h
index fcf116cc4..e86f636d2 100644
--- a/drivers/staging/media/atomisp/include/linux/atomisp.h
+++ b/drivers/staging/media/atomisp/include/linux/atomisp.h
@@ -326,27 +326,14 @@ struct atomisp_resolution {
 	u32 height; /** Height */
 };
 
-/*
- * This specifies the coordinates (x,y)
- */
-struct atomisp_zoom_point {
-	s32 x; /** x coordinate */
-	s32 y; /** y coordinate */
-};
+#include <linux/videodev2.h>
 
-/*
- * This specifies the region
- */
-struct atomisp_zoom_region {
-	struct atomisp_zoom_point
-		origin; /* Starting point coordinates for the region */
-	struct atomisp_resolution resolution; /* Region resolution */
-};
+/* Use v4l2_rect instead of shadow structures */
 
 struct atomisp_dz_config {
 	u32 dx; /** Horizontal zoom factor */
 	u32 dy; /** Vertical zoom factor */
-	struct atomisp_zoom_region zoom_region; /** region for zoom */
+	struct v4l2_rect zoom_region; /** region for zoom */
 };
 
 struct atomisp_parm {
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 327836372..76a65f379 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -874,7 +874,9 @@ void atomisp_assert_recovery_work(struct work_struct *work)
 	if (!isp->asd.streaming)
 		goto out_unlock;
 
-	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false);
+	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
+				   false))
+		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
 
 	spin_lock_irqsave(&isp->lock, flags);
 	isp->asd.streaming = false;
@@ -925,8 +927,9 @@ void atomisp_assert_recovery_work(struct work_struct *work)
 
 	atomisp_csi2_configure(&isp->asd);
 
-	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
-			       atomisp_css_valid_sof(isp));
+	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
+				   atomisp_css_valid_sof(isp)))
+		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
 
 	if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_AUTO, true) < 0)
 		dev_dbg(isp->dev, "DFS auto failed while recovering!\n");
@@ -1196,9 +1199,7 @@ int atomisp_xnr(struct atomisp_sub_device *asd, int flag,
 		return 0;
 	}
 
-	atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
-
-	return 0;
+	return atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
 }
 
 /*
@@ -1764,15 +1765,13 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 		return -EINVAL;
 	}
 
-	if (dz_config->zoom_region.resolution.width
-	    == asd->sensor_array_res.width
-	    || dz_config->zoom_region.resolution.height
-	    == asd->sensor_array_res.height) {
+	if (dz_config->zoom_region.width == asd->sensor_array_res.width ||
+	    dz_config->zoom_region.height == asd->sensor_array_res.height) {
 		/*no need crop region*/
-		dz_config->zoom_region.origin.x = 0;
-		dz_config->zoom_region.origin.y = 0;
-		dz_config->zoom_region.resolution.width = eff_res.width;
-		dz_config->zoom_region.resolution.height = eff_res.height;
+		dz_config->zoom_region.left = 0;
+		dz_config->zoom_region.top = 0;
+		dz_config->zoom_region.width = eff_res.width;
+		dz_config->zoom_region.height = eff_res.height;
 		return 0;
 	}
 
@@ -1783,18 +1782,18 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 	 */
 
 	if (!IS_ISP2401) {
-		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
-						  * eff_res.width
-						  / asd->sensor_array_res.width;
-		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
-						  * eff_res.height
-						  / asd->sensor_array_res.height;
-		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
-							  * eff_res.width
-							  / asd->sensor_array_res.width;
-		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
-							  * eff_res.height
-							  / asd->sensor_array_res.height;
+		dz_config->zoom_region.left =
+			(s32)((long long)dz_config->zoom_region.left *
+			      eff_res.width / asd->sensor_array_res.width);
+		dz_config->zoom_region.top =
+			(s32)((long long)dz_config->zoom_region.top *
+			      eff_res.height / asd->sensor_array_res.height);
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.width *
+			      eff_res.width / asd->sensor_array_res.width);
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.height *
+			      eff_res.height / asd->sensor_array_res.height);
 		/*
 		 * Set same ratio of crop region resolution and current pipe output
 		 * resolution
@@ -1821,62 +1820,67 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 				   - asd->sensor_array_res.width
 				   * out_res.height / out_res.width;
 			h_offset = h_offset / 2;
-			if (dz_config->zoom_region.origin.y < h_offset)
-				dz_config->zoom_region.origin.y = 0;
+			if (dz_config->zoom_region.top < h_offset)
+				dz_config->zoom_region.top = 0;
 			else
-				dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y - h_offset;
+				dz_config->zoom_region.top = dz_config->zoom_region.top - h_offset;
 			w_offset = 0;
 		} else {
 			w_offset = asd->sensor_array_res.width
 				   - asd->sensor_array_res.height
 				   * out_res.width / out_res.height;
 			w_offset = w_offset / 2;
-			if (dz_config->zoom_region.origin.x < w_offset)
-				dz_config->zoom_region.origin.x = 0;
+			if (dz_config->zoom_region.left < w_offset)
+				dz_config->zoom_region.left = 0;
 			else
-				dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x - w_offset;
+				dz_config->zoom_region.left =
+					dz_config->zoom_region.left - w_offset;
 			h_offset = 0;
 		}
-		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
-						  * eff_res.width
-						  / (asd->sensor_array_res.width - 2 * w_offset);
-		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
-						  * eff_res.height
-						  / (asd->sensor_array_res.height - 2 * h_offset);
-		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
-						  * eff_res.width
-						  / (asd->sensor_array_res.width - 2 * w_offset);
-		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
-						  * eff_res.height
-						  / (asd->sensor_array_res.height - 2 * h_offset);
-	}
-
-	if (out_res.width * dz_config->zoom_region.resolution.height
-	    > dz_config->zoom_region.resolution.width * out_res.height) {
-		dz_config->zoom_region.resolution.height =
-		    dz_config->zoom_region.resolution.width
-		    * out_res.height / out_res.width;
+		dz_config->zoom_region.left =
+			(s32)((long long)dz_config->zoom_region.left *
+			      eff_res.width /
+			      (asd->sensor_array_res.width - 2 * w_offset));
+		dz_config->zoom_region.top =
+			(s32)((long long)dz_config->zoom_region.top *
+			      eff_res.height /
+			      (asd->sensor_array_res.height - 2 * h_offset));
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.width *
+			      eff_res.width /
+			      (asd->sensor_array_res.width - 2 * w_offset));
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.height *
+			      eff_res.height /
+			      (asd->sensor_array_res.height - 2 * h_offset));
+	}
+
+	if ((long long)out_res.width * dz_config->zoom_region.height >
+	    (long long)dz_config->zoom_region.width * out_res.height) {
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.width *
+			      out_res.height / out_res.width);
 	} else {
-		dz_config->zoom_region.resolution.width =
-		    dz_config->zoom_region.resolution.height
-		    * out_res.width / out_res.height;
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.height *
+			      out_res.width / out_res.height);
 	}
 	dev_dbg(asd->isp->dev,
 		"%s crop region:(%d,%d),(%d,%d) eff_res(%d, %d) array_size(%d,%d) out_res(%d, %d)\n",
-		__func__, dz_config->zoom_region.origin.x,
-		dz_config->zoom_region.origin.y,
-		dz_config->zoom_region.resolution.width,
-		dz_config->zoom_region.resolution.height,
+		__func__, dz_config->zoom_region.left,
+		dz_config->zoom_region.top,
+		dz_config->zoom_region.width,
+		dz_config->zoom_region.height,
 		eff_res.width, eff_res.height,
 		asd->sensor_array_res.width,
 		asd->sensor_array_res.height,
 		out_res.width, out_res.height);
 
-	if ((dz_config->zoom_region.origin.x +
-	     dz_config->zoom_region.resolution.width
+	if ((dz_config->zoom_region.left +
+	     dz_config->zoom_region.width
 	     > eff_res.width) ||
-	    (dz_config->zoom_region.origin.y +
-	     dz_config->zoom_region.resolution.height
+	    (dz_config->zoom_region.top +
+	     dz_config->zoom_region.height
 	     > eff_res.height))
 		return -EINVAL;
 
@@ -1901,10 +1905,10 @@ static bool atomisp_check_zoom_region(
 
 	config.width = asd->sensor_array_res.width;
 	config.height = asd->sensor_array_res.height;
-	w = dz_config->zoom_region.origin.x +
-	    dz_config->zoom_region.resolution.width;
-	h = dz_config->zoom_region.origin.y +
-	    dz_config->zoom_region.resolution.height;
+	w = dz_config->zoom_region.left +
+	    dz_config->zoom_region.width;
+	h = dz_config->zoom_region.top +
+	    dz_config->zoom_region.height;
 
 	if ((w <= config.width) && (h <= config.height) && w > 0 && h > 0)
 		flag = true;
@@ -1912,10 +1916,10 @@ static bool atomisp_check_zoom_region(
 		/* setting error zoom region */
 		dev_err(asd->isp->dev,
 			"%s zoom region ERROR:dz_config:(%d,%d),(%d,%d)array_res(%d, %d)\n",
-			__func__, dz_config->zoom_region.origin.x,
-			dz_config->zoom_region.origin.y,
-			dz_config->zoom_region.resolution.width,
-			dz_config->zoom_region.resolution.height,
+			__func__, dz_config->zoom_region.left,
+			dz_config->zoom_region.top,
+			dz_config->zoom_region.width,
+			dz_config->zoom_region.height,
 			config.width, config.height);
 
 	return flag;
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index 5c0a1d92b..bb277f5a3 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -678,13 +678,104 @@ static int atomisp_g_fmt_cap(struct file *file, void *fh,
 	return atomisp_try_fmt_cap(file, fh, f);
 }
 
+static int atomisp_alloc_stat_bufs_list(struct atomisp_sub_device *asd,
+					u16 stream_id,
+					struct list_head *head,
+					int count,
+					int type)
+{
+	struct atomisp_s3a_buf *s3a_buf;
+	struct atomisp_dis_buf *dis_buf;
+	struct atomisp_metadata_buf *md_buf;
+	int ret;
+
+	while (count--) {
+		switch (type) {
+		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
+			s3a_buf = kzalloc(sizeof(*s3a_buf), GFP_KERNEL);
+			if (!s3a_buf)
+				goto error;
+
+			ret = atomisp_css_allocate_stat_buffers(asd, stream_id,
+								s3a_buf, NULL,
+								NULL);
+			if (ret) {
+				kfree(s3a_buf);
+				goto error;
+			}
+			list_add_tail(&s3a_buf->list, head);
+			break;
+		case IA_CSS_BUFFER_TYPE_DIS_STATISTICS:
+			dis_buf = kzalloc(sizeof(*dis_buf), GFP_KERNEL);
+			if (!dis_buf)
+				goto error;
+
+			ret = atomisp_css_allocate_stat_buffers(asd, stream_id,
+								NULL, dis_buf,
+								NULL);
+			if (ret) {
+				kfree(dis_buf);
+				goto error;
+			}
+			list_add_tail(&dis_buf->list, head);
+			break;
+		case IA_CSS_BUFFER_TYPE_METADATA:
+			md_buf = kzalloc(sizeof(*md_buf), GFP_KERNEL);
+			if (!md_buf)
+				goto error;
+
+			ret = atomisp_css_allocate_stat_buffers(asd, stream_id,
+								NULL, NULL,
+								md_buf);
+			if (ret) {
+				kfree(md_buf);
+				goto error;
+			}
+			list_add_tail(&md_buf->list, head);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+
+error:
+	while (!list_empty(head)) {
+		switch (type) {
+		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
+			s3a_buf = list_entry(head->next,
+					     struct atomisp_s3a_buf, list);
+			atomisp_css_free_3a_buffer(s3a_buf);
+			list_del(&s3a_buf->list);
+			kfree(s3a_buf);
+			break;
+		case IA_CSS_BUFFER_TYPE_DIS_STATISTICS:
+			dis_buf = list_entry(head->next,
+					     struct atomisp_dis_buf, list);
+			atomisp_css_free_dis_buffer(dis_buf);
+			list_del(&dis_buf->list);
+			kfree(dis_buf);
+			break;
+		case IA_CSS_BUFFER_TYPE_METADATA:
+			md_buf = list_entry(head->next,
+					    struct atomisp_metadata_buf, list);
+			atomisp_css_free_metadata_buffer(md_buf);
+			list_del(&md_buf->list);
+			kfree(md_buf);
+			break;
+		}
+	}
+	return -ENOMEM;
+}
+
 int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 				uint16_t stream_id)
 {
 	struct atomisp_device *isp = asd->isp;
-	struct atomisp_s3a_buf *s3a_buf = NULL, *_s3a_buf;
-	struct atomisp_dis_buf *dis_buf = NULL, *_dis_buf;
-	struct atomisp_metadata_buf *md_buf = NULL, *_md_buf;
+	struct atomisp_dis_buf *dis_buf, *_dis_buf;
+	struct atomisp_s3a_buf *s3a_buf, *_s3a_buf;
+	struct atomisp_metadata_buf *md_buf, *_md_buf;
 	int count;
 	struct ia_css_dvs_grid_info *dvs_grid_info =
 	    atomisp_css_get_dvs_grid_info(&asd->params.curr_grid_info);
@@ -695,37 +786,20 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 		count = ATOMISP_CSS_Q_DEPTH +
 			ATOMISP_S3A_BUF_QUEUE_DEPTH_FOR_HAL;
 		dev_dbg(isp->dev, "allocating %d 3a buffers\n", count);
-		while (count--) {
-			s3a_buf = kzalloc(sizeof(struct atomisp_s3a_buf), GFP_KERNEL);
-			if (!s3a_buf)
-				goto error;
-
-			if (atomisp_css_allocate_stat_buffers(
-				asd, stream_id, s3a_buf, NULL, NULL)) {
-				kfree(s3a_buf);
-				goto error;
-			}
-
-			list_add_tail(&s3a_buf->list, &asd->s3a_stats);
-		}
+		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+						 &asd->s3a_stats, count,
+						 IA_CSS_BUFFER_TYPE_3A_STATISTICS))
+			goto error;
 	}
 
 	if (list_empty(&asd->dis_stats) && dvs_grid_info &&
 	    dvs_grid_info->enable) {
 		count = ATOMISP_CSS_Q_DEPTH + 1;
 		dev_dbg(isp->dev, "allocating %d dis buffers\n", count);
-		while (count--) {
-			dis_buf = kzalloc(sizeof(struct atomisp_dis_buf), GFP_KERNEL);
-			if (!dis_buf)
-				goto error;
-			if (atomisp_css_allocate_stat_buffers(
-				asd, stream_id, NULL, dis_buf, NULL)) {
-				kfree(dis_buf);
-				goto error;
-			}
-
-			list_add_tail(&dis_buf->list, &asd->dis_stats);
-		}
+		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+						 &asd->dis_stats, count,
+						 IA_CSS_BUFFER_TYPE_DIS_STATISTICS))
+			goto error;
 	}
 
 	for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
@@ -736,19 +810,10 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 				ATOMISP_METADATA_QUEUE_DEPTH_FOR_HAL;
 			dev_dbg(isp->dev, "allocating %d metadata buffers for type %d\n",
 				count, i);
-			while (count--) {
-				md_buf = kzalloc(sizeof(struct atomisp_metadata_buf),
-						 GFP_KERNEL);
-				if (!md_buf)
-					goto error;
-
-				if (atomisp_css_allocate_stat_buffers(
-					asd, stream_id, NULL, NULL, md_buf)) {
-					kfree(md_buf);
-					goto error;
-				}
-				list_add_tail(&md_buf->list, &asd->metadata[i]);
-			}
+			if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+							 &asd->metadata[i], count,
+							 IA_CSS_BUFFER_TYPE_METADATA))
+				goto error;
 		}
 	}
 	return 0;
-- 
2.43.0
Re: [PATCH] media: atomisp: replace shadow zoom structs with v4l2_rect and fix error paths
Posted by Hans de Goede 1 month ago 
Hi Karthikey,

On 4-Jan-26 17:40, Karthikey D Kadati wrote:
> This patch addresses a TODO graduation blocker by removing private zoom
> structures (`atomisp_zoom_point` and `atomisp_zoom_region`) in favor of
> standard V4L2 types (`v4l2_rect`).
> 
> It also improves error propagation for IRQs and XNR configuration, ensuring
> that failures are detected and reported. Additionally, it consolidates
> memory allocation boilerplate into a safer helper function
> (`atomisp_alloc_stat_bufs_list`) that includes a proper error-unwind path
> to prevent memory leaks during partial allocation failures.

It looks like you are doing a lot of unrelated changes in a single 
patch. Please split this up into multiple patches each only making
a single change:

1. Replace shadow zoom structs with v4l2_rect
2. Add atomisp_alloc_stat_bufs_list() helper function (and use it)
3. Error handling fixes

Regards,

Hans



> 
> Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
> ---
>  .../media/atomisp/include/linux/atomisp.h     |  19 +--
>  .../staging/media/atomisp/pci/atomisp_cmd.c   | 144 ++++++++---------
>  .../staging/media/atomisp/pci/atomisp_ioctl.c | 147 +++++++++++++-----
>  3 files changed, 183 insertions(+), 127 deletions(-)
> 
> diff --git a/drivers/staging/media/atomisp/include/linux/atomisp.h b/drivers/staging/media/atomisp/include/linux/atomisp.h
> index fcf116cc4..e86f636d2 100644
> --- a/drivers/staging/media/atomisp/include/linux/atomisp.h
> +++ b/drivers/staging/media/atomisp/include/linux/atomisp.h
> @@ -326,27 +326,14 @@ struct atomisp_resolution {
>  	u32 height; /** Height */
>  };
>  
> -/*
> - * This specifies the coordinates (x,y)
> - */
> -struct atomisp_zoom_point {
> -	s32 x; /** x coordinate */
> -	s32 y; /** y coordinate */
> -};
> +#include <linux/videodev2.h>
>  
> -/*
> - * This specifies the region
> - */
> -struct atomisp_zoom_region {
> -	struct atomisp_zoom_point
> -		origin; /* Starting point coordinates for the region */
> -	struct atomisp_resolution resolution; /* Region resolution */
> -};
> +/* Use v4l2_rect instead of shadow structures */
>  
>  struct atomisp_dz_config {
>  	u32 dx; /** Horizontal zoom factor */
>  	u32 dy; /** Vertical zoom factor */
> -	struct atomisp_zoom_region zoom_region; /** region for zoom */
> +	struct v4l2_rect zoom_region; /** region for zoom */
>  };
>  
>  struct atomisp_parm {
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> index 327836372..76a65f379 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> @@ -874,7 +874,9 @@ void atomisp_assert_recovery_work(struct work_struct *work)
>  	if (!isp->asd.streaming)
>  		goto out_unlock;
>  
> -	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false);
> +	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
> +				   false))
> +		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
>  
>  	spin_lock_irqsave(&isp->lock, flags);
>  	isp->asd.streaming = false;
> @@ -925,8 +927,9 @@ void atomisp_assert_recovery_work(struct work_struct *work)
>  
>  	atomisp_csi2_configure(&isp->asd);
>  
> -	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
> -			       atomisp_css_valid_sof(isp));
> +	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
> +				   atomisp_css_valid_sof(isp)))
> +		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
>  
>  	if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_AUTO, true) < 0)
>  		dev_dbg(isp->dev, "DFS auto failed while recovering!\n");
> @@ -1196,9 +1199,7 @@ int atomisp_xnr(struct atomisp_sub_device *asd, int flag,
>  		return 0;
>  	}
>  
> -	atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
> -
> -	return 0;
> +	return atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
>  }
>  
>  /*
> @@ -1764,15 +1765,13 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
>  		return -EINVAL;
>  	}
>  
> -	if (dz_config->zoom_region.resolution.width
> -	    == asd->sensor_array_res.width
> -	    || dz_config->zoom_region.resolution.height
> -	    == asd->sensor_array_res.height) {
> +	if (dz_config->zoom_region.width == asd->sensor_array_res.width ||
> +	    dz_config->zoom_region.height == asd->sensor_array_res.height) {
>  		/*no need crop region*/
> -		dz_config->zoom_region.origin.x = 0;
> -		dz_config->zoom_region.origin.y = 0;
> -		dz_config->zoom_region.resolution.width = eff_res.width;
> -		dz_config->zoom_region.resolution.height = eff_res.height;
> +		dz_config->zoom_region.left = 0;
> +		dz_config->zoom_region.top = 0;
> +		dz_config->zoom_region.width = eff_res.width;
> +		dz_config->zoom_region.height = eff_res.height;
>  		return 0;
>  	}
>  
> @@ -1783,18 +1782,18 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
>  	 */
>  
>  	if (!IS_ISP2401) {
> -		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
> -						  * eff_res.width
> -						  / asd->sensor_array_res.width;
> -		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
> -						  * eff_res.height
> -						  / asd->sensor_array_res.height;
> -		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
> -							  * eff_res.width
> -							  / asd->sensor_array_res.width;
> -		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
> -							  * eff_res.height
> -							  / asd->sensor_array_res.height;
> +		dz_config->zoom_region.left =
> +			(s32)((long long)dz_config->zoom_region.left *
> +			      eff_res.width / asd->sensor_array_res.width);
> +		dz_config->zoom_region.top =
> +			(s32)((long long)dz_config->zoom_region.top *
> +			      eff_res.height / asd->sensor_array_res.height);
> +		dz_config->zoom_region.width =
> +			(u32)((long long)dz_config->zoom_region.width *
> +			      eff_res.width / asd->sensor_array_res.width);
> +		dz_config->zoom_region.height =
> +			(u32)((long long)dz_config->zoom_region.height *
> +			      eff_res.height / asd->sensor_array_res.height);
>  		/*
>  		 * Set same ratio of crop region resolution and current pipe output
>  		 * resolution
> @@ -1821,62 +1820,67 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
>  				   - asd->sensor_array_res.width
>  				   * out_res.height / out_res.width;
>  			h_offset = h_offset / 2;
> -			if (dz_config->zoom_region.origin.y < h_offset)
> -				dz_config->zoom_region.origin.y = 0;
> +			if (dz_config->zoom_region.top < h_offset)
> +				dz_config->zoom_region.top = 0;
>  			else
> -				dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y - h_offset;
> +				dz_config->zoom_region.top = dz_config->zoom_region.top - h_offset;
>  			w_offset = 0;
>  		} else {
>  			w_offset = asd->sensor_array_res.width
>  				   - asd->sensor_array_res.height
>  				   * out_res.width / out_res.height;
>  			w_offset = w_offset / 2;
> -			if (dz_config->zoom_region.origin.x < w_offset)
> -				dz_config->zoom_region.origin.x = 0;
> +			if (dz_config->zoom_region.left < w_offset)
> +				dz_config->zoom_region.left = 0;
>  			else
> -				dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x - w_offset;
> +				dz_config->zoom_region.left =
> +					dz_config->zoom_region.left - w_offset;
>  			h_offset = 0;
>  		}
> -		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
> -						  * eff_res.width
> -						  / (asd->sensor_array_res.width - 2 * w_offset);
> -		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
> -						  * eff_res.height
> -						  / (asd->sensor_array_res.height - 2 * h_offset);
> -		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
> -						  * eff_res.width
> -						  / (asd->sensor_array_res.width - 2 * w_offset);
> -		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
> -						  * eff_res.height
> -						  / (asd->sensor_array_res.height - 2 * h_offset);
> -	}
> -
> -	if (out_res.width * dz_config->zoom_region.resolution.height
> -	    > dz_config->zoom_region.resolution.width * out_res.height) {
> -		dz_config->zoom_region.resolution.height =
> -		    dz_config->zoom_region.resolution.width
> -		    * out_res.height / out_res.width;
> +		dz_config->zoom_region.left =
> +			(s32)((long long)dz_config->zoom_region.left *
> +			      eff_res.width /
> +			      (asd->sensor_array_res.width - 2 * w_offset));
> +		dz_config->zoom_region.top =
> +			(s32)((long long)dz_config->zoom_region.top *
> +			      eff_res.height /
> +			      (asd->sensor_array_res.height - 2 * h_offset));
> +		dz_config->zoom_region.width =
> +			(u32)((long long)dz_config->zoom_region.width *
> +			      eff_res.width /
> +			      (asd->sensor_array_res.width - 2 * w_offset));
> +		dz_config->zoom_region.height =
> +			(u32)((long long)dz_config->zoom_region.height *
> +			      eff_res.height /
> +			      (asd->sensor_array_res.height - 2 * h_offset));
> +	}
> +
> +	if ((long long)out_res.width * dz_config->zoom_region.height >
> +	    (long long)dz_config->zoom_region.width * out_res.height) {
> +		dz_config->zoom_region.height =
> +			(u32)((long long)dz_config->zoom_region.width *
> +			      out_res.height / out_res.width);
>  	} else {
> -		dz_config->zoom_region.resolution.width =
> -		    dz_config->zoom_region.resolution.height
> -		    * out_res.width / out_res.height;
> +		dz_config->zoom_region.width =
> +			(u32)((long long)dz_config->zoom_region.height *
> +			      out_res.width / out_res.height);
>  	}
>  	dev_dbg(asd->isp->dev,
>  		"%s crop region:(%d,%d),(%d,%d) eff_res(%d, %d) array_size(%d,%d) out_res(%d, %d)\n",
> -		__func__, dz_config->zoom_region.origin.x,
> -		dz_config->zoom_region.origin.y,
> -		dz_config->zoom_region.resolution.width,
> -		dz_config->zoom_region.resolution.height,
> +		__func__, dz_config->zoom_region.left,
> +		dz_config->zoom_region.top,
> +		dz_config->zoom_region.width,
> +		dz_config->zoom_region.height,
>  		eff_res.width, eff_res.height,
>  		asd->sensor_array_res.width,
>  		asd->sensor_array_res.height,
>  		out_res.width, out_res.height);
>  
> -	if ((dz_config->zoom_region.origin.x +
> -	     dz_config->zoom_region.resolution.width
> +	if ((dz_config->zoom_region.left +
> +	     dz_config->zoom_region.width
>  	     > eff_res.width) ||
> -	    (dz_config->zoom_region.origin.y +
> -	     dz_config->zoom_region.resolution.height
> +	    (dz_config->zoom_region.top +
> +	     dz_config->zoom_region.height
>  	     > eff_res.height))
>  		return -EINVAL;
>  
> @@ -1901,10 +1905,10 @@ static bool atomisp_check_zoom_region(
>  
>  	config.width = asd->sensor_array_res.width;
>  	config.height = asd->sensor_array_res.height;
> -	w = dz_config->zoom_region.origin.x +
> -	    dz_config->zoom_region.resolution.width;
> -	h = dz_config->zoom_region.origin.y +
> -	    dz_config->zoom_region.resolution.height;
> +	w = dz_config->zoom_region.left +
> +	    dz_config->zoom_region.width;
> +	h = dz_config->zoom_region.top +
> +	    dz_config->zoom_region.height;
>  
>  	if ((w <= config.width) && (h <= config.height) && w > 0 && h > 0)
>  		flag = true;
> @@ -1912,10 +1916,10 @@ static bool atomisp_check_zoom_region(
>  		/* setting error zoom region */
>  		dev_err(asd->isp->dev,
>  			"%s zoom region ERROR:dz_config:(%d,%d),(%d,%d)array_res(%d, %d)\n",
> -			__func__, dz_config->zoom_region.origin.x,
> -			dz_config->zoom_region.origin.y,
> -			dz_config->zoom_region.resolution.width,
> -			dz_config->zoom_region.resolution.height,
> +			__func__, dz_config->zoom_region.left,
> +			dz_config->zoom_region.top,
> +			dz_config->zoom_region.width,
> +			dz_config->zoom_region.height,
>  			config.width, config.height);
>  
>  	return flag;
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
> index 5c0a1d92b..bb277f5a3 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
> @@ -678,13 +678,104 @@ static int atomisp_g_fmt_cap(struct file *file, void *fh,
>  	return atomisp_try_fmt_cap(file, fh, f);
>  }
>  
> +static int atomisp_alloc_stat_bufs_list(struct atomisp_sub_device *asd,
> +					u16 stream_id,
> +					struct list_head *head,
> +					int count,
> +					int type)
> +{
> +	struct atomisp_s3a_buf *s3a_buf;
> +	struct atomisp_dis_buf *dis_buf;
> +	struct atomisp_metadata_buf *md_buf;
> +	int ret;
> +
> +	while (count--) {
> +		switch (type) {
> +		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
> +			s3a_buf = kzalloc(sizeof(*s3a_buf), GFP_KERNEL);
> +			if (!s3a_buf)
> +				goto error;
> +
> +			ret = atomisp_css_allocate_stat_buffers(asd, stream_id,
> +								s3a_buf, NULL,
> +								NULL);
> +			if (ret) {
> +				kfree(s3a_buf);
> +				goto error;
> +			}
> +			list_add_tail(&s3a_buf->list, head);
> +			break;
> +		case IA_CSS_BUFFER_TYPE_DIS_STATISTICS:
> +			dis_buf = kzalloc(sizeof(*dis_buf), GFP_KERNEL);
> +			if (!dis_buf)
> +				goto error;
> +
> +			ret = atomisp_css_allocate_stat_buffers(asd, stream_id,
> +								NULL, dis_buf,
> +								NULL);
> +			if (ret) {
> +				kfree(dis_buf);
> +				goto error;
> +			}
> +			list_add_tail(&dis_buf->list, head);
> +			break;
> +		case IA_CSS_BUFFER_TYPE_METADATA:
> +			md_buf = kzalloc(sizeof(*md_buf), GFP_KERNEL);
> +			if (!md_buf)
> +				goto error;
> +
> +			ret = atomisp_css_allocate_stat_buffers(asd, stream_id,
> +								NULL, NULL,
> +								md_buf);
> +			if (ret) {
> +				kfree(md_buf);
> +				goto error;
> +			}
> +			list_add_tail(&md_buf->list, head);
> +			break;
> +		default:
> +			return -EINVAL;
> +		}
> +	}
> +
> +	return 0;
> +
> +error:
> +	while (!list_empty(head)) {
> +		switch (type) {
> +		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
> +			s3a_buf = list_entry(head->next,
> +					     struct atomisp_s3a_buf, list);
> +			atomisp_css_free_3a_buffer(s3a_buf);
> +			list_del(&s3a_buf->list);
> +			kfree(s3a_buf);
> +			break;
> +		case IA_CSS_BUFFER_TYPE_DIS_STATISTICS:
> +			dis_buf = list_entry(head->next,
> +					     struct atomisp_dis_buf, list);
> +			atomisp_css_free_dis_buffer(dis_buf);
> +			list_del(&dis_buf->list);
> +			kfree(dis_buf);
> +			break;
> +		case IA_CSS_BUFFER_TYPE_METADATA:
> +			md_buf = list_entry(head->next,
> +					    struct atomisp_metadata_buf, list);
> +			atomisp_css_free_metadata_buffer(md_buf);
> +			list_del(&md_buf->list);
> +			kfree(md_buf);
> +			break;
> +		}
> +	}
> +	return -ENOMEM;
> +}
> +
>  int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
>  				uint16_t stream_id)
>  {
>  	struct atomisp_device *isp = asd->isp;
> -	struct atomisp_s3a_buf *s3a_buf = NULL, *_s3a_buf;
> -	struct atomisp_dis_buf *dis_buf = NULL, *_dis_buf;
> -	struct atomisp_metadata_buf *md_buf = NULL, *_md_buf;
> +	struct atomisp_dis_buf *dis_buf, *_dis_buf;
> +	struct atomisp_s3a_buf *s3a_buf, *_s3a_buf;
> +	struct atomisp_metadata_buf *md_buf, *_md_buf;
>  	int count;
>  	struct ia_css_dvs_grid_info *dvs_grid_info =
>  	    atomisp_css_get_dvs_grid_info(&asd->params.curr_grid_info);
> @@ -695,37 +786,20 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
>  		count = ATOMISP_CSS_Q_DEPTH +
>  			ATOMISP_S3A_BUF_QUEUE_DEPTH_FOR_HAL;
>  		dev_dbg(isp->dev, "allocating %d 3a buffers\n", count);
> -		while (count--) {
> -			s3a_buf = kzalloc(sizeof(struct atomisp_s3a_buf), GFP_KERNEL);
> -			if (!s3a_buf)
> -				goto error;
> -
> -			if (atomisp_css_allocate_stat_buffers(
> -				asd, stream_id, s3a_buf, NULL, NULL)) {
> -				kfree(s3a_buf);
> -				goto error;
> -			}
> -
> -			list_add_tail(&s3a_buf->list, &asd->s3a_stats);
> -		}
> +		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
> +						 &asd->s3a_stats, count,
> +						 IA_CSS_BUFFER_TYPE_3A_STATISTICS))
> +			goto error;
>  	}
>  
>  	if (list_empty(&asd->dis_stats) && dvs_grid_info &&
>  	    dvs_grid_info->enable) {
>  		count = ATOMISP_CSS_Q_DEPTH + 1;
>  		dev_dbg(isp->dev, "allocating %d dis buffers\n", count);
> -		while (count--) {
> -			dis_buf = kzalloc(sizeof(struct atomisp_dis_buf), GFP_KERNEL);
> -			if (!dis_buf)
> -				goto error;
> -			if (atomisp_css_allocate_stat_buffers(
> -				asd, stream_id, NULL, dis_buf, NULL)) {
> -				kfree(dis_buf);
> -				goto error;
> -			}
> -
> -			list_add_tail(&dis_buf->list, &asd->dis_stats);
> -		}
> +		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
> +						 &asd->dis_stats, count,
> +						 IA_CSS_BUFFER_TYPE_DIS_STATISTICS))
> +			goto error;
>  	}
>  
>  	for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
> @@ -736,19 +810,10 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
>  				ATOMISP_METADATA_QUEUE_DEPTH_FOR_HAL;
>  			dev_dbg(isp->dev, "allocating %d metadata buffers for type %d\n",
>  				count, i);
> -			while (count--) {
> -				md_buf = kzalloc(sizeof(struct atomisp_metadata_buf),
> -						 GFP_KERNEL);
> -				if (!md_buf)
> -					goto error;
> -
> -				if (atomisp_css_allocate_stat_buffers(
> -					asd, stream_id, NULL, NULL, md_buf)) {
> -					kfree(md_buf);
> -					goto error;
> -				}
> -				list_add_tail(&md_buf->list, &asd->metadata[i]);
> -			}
> +			if (atomisp_alloc_stat_bufs_list(asd, stream_id,
> +							 &asd->metadata[i], count,
> +							 IA_CSS_BUFFER_TYPE_METADATA))
> +				goto error;
>  		}
>  	}
>  	return 0;
[PATCH v2 RESEND 0/3] media: atomisp: refactoring and fixes for V4L2 compliance
Posted by Karthikey D Kadati 1 month ago 
This patch series addresses maintainer feedback and fixes build errors
in the atomisp driver.

Patch 1: Standardizes the 'Bridge' structs significantly by using v4l2_rect instead of custom shadow structs and aligning ia_css_region members with V4L2 conventions.
Patch 2: Introduces a helper function for statistics buffer allocation to reduce code duplication and centralize error handling logic.
Patch 3: Adds missing error propagation for IRQ enable and XNR configuration to improve robustness.

This series is based on the latest staging/next tree and has been verified with checkpatch.pl --strict.

Karthikey D Kadati (3):
  media: atomisp: replace shadow zoom structs with v4l2_rect
  media: atomisp: consolidate statistics buffer allocation
  media: atomisp: propagate errors from ISP xnr and IRQ enable

 .../media/atomisp/include/linux/atomisp.h     |  19 +--
 .../staging/media/atomisp/pci/atomisp_cmd.c   | 142 +++++++++---------
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 123 +++++++++------
 .../staging/media/atomisp/pci/ia_css_types.h  |   6 +-
 .../staging/media/atomisp/pci/sh_css_params.c |  16 +-
 5 files changed, 166 insertions(+), 140 deletions(-)

-- 
2.43.0
Re: [PATCH v2 RESEND 0/3] media: atomisp: refactoring and fixes for V4L2 compliance
Posted by Dan Carpenter 1 month ago 
When you're sending v2, it's better to just start a new thread.  We stopped
sending them as a reply years ago.  It makes threads too confusing.

On Wed, Jan 07, 2026 at 07:18:41PM +0530, Karthikey D Kadati wrote:
> This patch series addresses maintainer feedback and fixes build errors
> in the atomisp driver.
> 
> Patch 1: Standardizes the 'Bridge' structs significantly by using v4l2_rect instead of custom shadow structs and aligning ia_css_region members with V4L2 conventions.
> Patch 2: Introduces a helper function for statistics buffer allocation to reduce code duplication and centralize error handling logic.
> Patch 3: Adds missing error propagation for IRQ enable and XNR configuration to improve robustness.
> 

Please line wrap your emails at 72 characters.

regards,
dan carpenter
[PATCH v2 RESEND v2 1/3] media: atomisp: replace shadow zoom structs with v4l2_rect
Posted by Karthikey D Kadati 1 month ago 
Remove custom atomisp_zoom_point and atomisp_zoom_region structs and

usage in favor of standard v4l2_rect within atomisp_dz_config.

This aligns the driver with V4L2 standards and removes unnecessary

custom types.

Also standardizes the internal ia_css_region struct members to match

V4L2 naming conventions (left, top, width, height) to facilitate the

bridge mapping.

Updates atomisp_cmd.c and sh_css_params.c to use the new member names

and ensures safe math using long long casts to prevent overflow during

resolution scaling.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 .../media/atomisp/include/linux/atomisp.h     |  19 +--
 .../staging/media/atomisp/pci/atomisp_cmd.c   | 130 +++++++++---------
 .../staging/media/atomisp/pci/ia_css_types.h  |   6 +-
 .../staging/media/atomisp/pci/sh_css_params.c |  16 +--
 4 files changed, 79 insertions(+), 92 deletions(-)

diff --git a/drivers/staging/media/atomisp/include/linux/atomisp.h b/drivers/staging/media/atomisp/include/linux/atomisp.h
index fcf116cc4..b5cce12c1 100644
--- a/drivers/staging/media/atomisp/include/linux/atomisp.h
+++ b/drivers/staging/media/atomisp/include/linux/atomisp.h
@@ -326,27 +326,12 @@ struct atomisp_resolution {
 	u32 height; /** Height */
 };
 
-/*
- * This specifies the coordinates (x,y)
- */
-struct atomisp_zoom_point {
-	s32 x; /** x coordinate */
-	s32 y; /** y coordinate */
-};
-
-/*
- * This specifies the region
- */
-struct atomisp_zoom_region {
-	struct atomisp_zoom_point
-		origin; /* Starting point coordinates for the region */
-	struct atomisp_resolution resolution; /* Region resolution */
-};
+#include <linux/videodev2.h>
 
 struct atomisp_dz_config {
 	u32 dx; /** Horizontal zoom factor */
 	u32 dy; /** Vertical zoom factor */
-	struct atomisp_zoom_region zoom_region; /** region for zoom */
+	struct v4l2_rect zoom_region; /** region for zoom */
 };
 
 struct atomisp_parm {
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 327836372..4ed6b8aea 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -1764,15 +1764,13 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 		return -EINVAL;
 	}
 
-	if (dz_config->zoom_region.resolution.width
-	    == asd->sensor_array_res.width
-	    || dz_config->zoom_region.resolution.height
-	    == asd->sensor_array_res.height) {
+	if (dz_config->zoom_region.width == asd->sensor_array_res.width ||
+	    dz_config->zoom_region.height == asd->sensor_array_res.height) {
 		/*no need crop region*/
-		dz_config->zoom_region.origin.x = 0;
-		dz_config->zoom_region.origin.y = 0;
-		dz_config->zoom_region.resolution.width = eff_res.width;
-		dz_config->zoom_region.resolution.height = eff_res.height;
+		dz_config->zoom_region.left = 0;
+		dz_config->zoom_region.top = 0;
+		dz_config->zoom_region.width = eff_res.width;
+		dz_config->zoom_region.height = eff_res.height;
 		return 0;
 	}
 
@@ -1783,18 +1781,18 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 	 */
 
 	if (!IS_ISP2401) {
-		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
-						  * eff_res.width
-						  / asd->sensor_array_res.width;
-		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
-						  * eff_res.height
-						  / asd->sensor_array_res.height;
-		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
-							  * eff_res.width
-							  / asd->sensor_array_res.width;
-		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
-							  * eff_res.height
-							  / asd->sensor_array_res.height;
+		dz_config->zoom_region.left =
+			(s32)((long long)dz_config->zoom_region.left *
+			      eff_res.width / asd->sensor_array_res.width);
+		dz_config->zoom_region.top =
+			(s32)((long long)dz_config->zoom_region.top *
+			      eff_res.height / asd->sensor_array_res.height);
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.width *
+			      eff_res.width / asd->sensor_array_res.width);
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.height *
+			      eff_res.height / asd->sensor_array_res.height);
 		/*
 		 * Set same ratio of crop region resolution and current pipe output
 		 * resolution
@@ -1821,62 +1819,66 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 				   - asd->sensor_array_res.width
 				   * out_res.height / out_res.width;
 			h_offset = h_offset / 2;
-			if (dz_config->zoom_region.origin.y < h_offset)
-				dz_config->zoom_region.origin.y = 0;
+			if (dz_config->zoom_region.top < h_offset)
+				dz_config->zoom_region.top = 0;
 			else
-				dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y - h_offset;
+				dz_config->zoom_region.top -= h_offset;
 			w_offset = 0;
 		} else {
 			w_offset = asd->sensor_array_res.width
 				   - asd->sensor_array_res.height
 				   * out_res.width / out_res.height;
 			w_offset = w_offset / 2;
-			if (dz_config->zoom_region.origin.x < w_offset)
-				dz_config->zoom_region.origin.x = 0;
+			if (dz_config->zoom_region.left < w_offset)
+				dz_config->zoom_region.left = 0;
 			else
-				dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x - w_offset;
+				dz_config->zoom_region.left -= w_offset;
 			h_offset = 0;
 		}
-		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
-						  * eff_res.width
-						  / (asd->sensor_array_res.width - 2 * w_offset);
-		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
-						  * eff_res.height
-						  / (asd->sensor_array_res.height - 2 * h_offset);
-		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
-						  * eff_res.width
-						  / (asd->sensor_array_res.width - 2 * w_offset);
-		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
-						  * eff_res.height
-						  / (asd->sensor_array_res.height - 2 * h_offset);
-	}
-
-	if (out_res.width * dz_config->zoom_region.resolution.height
-	    > dz_config->zoom_region.resolution.width * out_res.height) {
-		dz_config->zoom_region.resolution.height =
-		    dz_config->zoom_region.resolution.width
-		    * out_res.height / out_res.width;
+		dz_config->zoom_region.left =
+			(s32)((long long)dz_config->zoom_region.left *
+			      eff_res.width /
+			      (asd->sensor_array_res.width - 2 * w_offset));
+		dz_config->zoom_region.top =
+			(s32)((long long)dz_config->zoom_region.top *
+			      eff_res.height /
+			      (asd->sensor_array_res.height - 2 * h_offset));
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.width *
+			      eff_res.width /
+			      (asd->sensor_array_res.width - 2 * w_offset));
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.height *
+			      eff_res.height /
+			      (asd->sensor_array_res.height - 2 * h_offset));
+	}
+
+	if ((long long)out_res.width * dz_config->zoom_region.height >
+	    (long long)dz_config->zoom_region.width * out_res.height) {
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.width *
+			      out_res.height / out_res.width);
 	} else {
-		dz_config->zoom_region.resolution.width =
-		    dz_config->zoom_region.resolution.height
-		    * out_res.width / out_res.height;
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.height *
+			      out_res.width / out_res.height);
 	}
 	dev_dbg(asd->isp->dev,
 		"%s crop region:(%d,%d),(%d,%d) eff_res(%d, %d) array_size(%d,%d) out_res(%d, %d)\n",
-		__func__, dz_config->zoom_region.origin.x,
-		dz_config->zoom_region.origin.y,
-		dz_config->zoom_region.resolution.width,
-		dz_config->zoom_region.resolution.height,
+		__func__, dz_config->zoom_region.left,
+		dz_config->zoom_region.top,
+		dz_config->zoom_region.width,
+		dz_config->zoom_region.height,
 		eff_res.width, eff_res.height,
 		asd->sensor_array_res.width,
 		asd->sensor_array_res.height,
 		out_res.width, out_res.height);
 
-	if ((dz_config->zoom_region.origin.x +
-	     dz_config->zoom_region.resolution.width
+	if ((dz_config->zoom_region.left +
+	     dz_config->zoom_region.width
 	     > eff_res.width) ||
-	    (dz_config->zoom_region.origin.y +
-	     dz_config->zoom_region.resolution.height
+	    (dz_config->zoom_region.top +
+	     dz_config->zoom_region.height
 	     > eff_res.height))
 		return -EINVAL;
 
@@ -1901,10 +1903,10 @@ static bool atomisp_check_zoom_region(
 
 	config.width = asd->sensor_array_res.width;
 	config.height = asd->sensor_array_res.height;
-	w = dz_config->zoom_region.origin.x +
-	    dz_config->zoom_region.resolution.width;
-	h = dz_config->zoom_region.origin.y +
-	    dz_config->zoom_region.resolution.height;
+	w = dz_config->zoom_region.left +
+	    dz_config->zoom_region.width;
+	h = dz_config->zoom_region.top +
+	    dz_config->zoom_region.height;
 
 	if ((w <= config.width) && (h <= config.height) && w > 0 && h > 0)
 		flag = true;
@@ -1912,10 +1914,10 @@ static bool atomisp_check_zoom_region(
 		/* setting error zoom region */
 		dev_err(asd->isp->dev,
 			"%s zoom region ERROR:dz_config:(%d,%d),(%d,%d)array_res(%d, %d)\n",
-			__func__, dz_config->zoom_region.origin.x,
-			dz_config->zoom_region.origin.y,
-			dz_config->zoom_region.resolution.width,
-			dz_config->zoom_region.resolution.height,
+			__func__, dz_config->zoom_region.left,
+			dz_config->zoom_region.top,
+			dz_config->zoom_region.width,
+			dz_config->zoom_region.height,
 			config.width, config.height);
 
 	return flag;
diff --git a/drivers/staging/media/atomisp/pci/ia_css_types.h b/drivers/staging/media/atomisp/pci/ia_css_types.h
index 676d7e20b..5c21a5415 100644
--- a/drivers/staging/media/atomisp/pci/ia_css_types.h
+++ b/drivers/staging/media/atomisp/pci/ia_css_types.h
@@ -431,8 +431,10 @@ struct ia_css_point {
  * This specifies the region
  */
 struct ia_css_region {
-	struct ia_css_point origin; /** Starting point coordinates for the region */
-	struct ia_css_resolution resolution; /** Region resolution */
+	s32 left; /** Starting point coordinates for the region */
+	s32 top;
+	s32 width; /** Region resolution */
+	s32 height;
 };
 
 /**
diff --git a/drivers/staging/media/atomisp/pci/sh_css_params.c b/drivers/staging/media/atomisp/pci/sh_css_params.c
index 11d62313c..0435f20a7 100644
--- a/drivers/staging/media/atomisp/pci/sh_css_params.c
+++ b/drivers/staging/media/atomisp/pci/sh_css_params.c
@@ -658,9 +658,7 @@ static const struct ia_css_dz_config default_dz_config = {
 	HRT_GDC_N,
 	HRT_GDC_N,
 	{
-		\
-		{0, 0}, \
-		{0, 0}, \
+		0, 0, 0, 0
 	}
 };
 
@@ -1210,8 +1208,8 @@ ia_css_process_zoom_and_motion(
 		}
 
 		assert(stage->stage_num < SH_CSS_MAX_STAGES);
-		if (params->dz_config.zoom_region.resolution.width == 0 &&
-		    params->dz_config.zoom_region.resolution.height == 0) {
+		if (params->dz_config.zoom_region.width == 0 &&
+		    params->dz_config.zoom_region.height == 0) {
 			sh_css_update_uds_and_crop_info(
 			    &info->sp,
 			    &binary->in_frame_info,
@@ -4096,10 +4094,10 @@ sh_css_update_uds_and_crop_info_based_on_zoom_region(
 	assert(motion_vector);
 	assert(uds);
 	assert(sp_out_crop_pos);
-	x0 = zoom->zoom_region.origin.x;
-	y0 = zoom->zoom_region.origin.y;
-	x1 = zoom->zoom_region.resolution.width + x0;
-	y1 = zoom->zoom_region.resolution.height + y0;
+	x0 = zoom->zoom_region.left;
+	y0 = zoom->zoom_region.top;
+	x1 = zoom->zoom_region.width + x0;
+	y1 = zoom->zoom_region.height + y0;
 
 	if ((x0 > x1) || (y0 > y1) || (x1 > pipe_in_res.width) || (y1 > pipe_in_res.height))
 		return -EINVAL;
-- 
2.43.0
Re: [PATCH v2 RESEND v2 1/3] media: atomisp: replace shadow zoom structs with v4l2_rect
Posted by Dan Carpenter 1 month ago 
On Wed, Jan 07, 2026 at 07:18:42PM +0530, Karthikey D Kadati wrote:
> Remove custom atomisp_zoom_point and atomisp_zoom_region structs and
> 
> usage in favor of standard v4l2_rect within atomisp_dz_config.
> 
> This aligns the driver with V4L2 standards and removes unnecessary
> 
> custom types.
> 
> Also standardizes the internal ia_css_region struct members to match
> 
> V4L2 naming conventions (left, top, width, height) to facilitate the
> 
> bridge mapping.
> 
> Updates atomisp_cmd.c and sh_css_params.c to use the new member names
> 
> and ensures safe math using long long casts to prevent overflow during
> 
> resolution scaling.
> 

The commit message has extra new lines obviously.

> diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> index 327836372..4ed6b8aea 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
> @@ -1764,15 +1764,13 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
>  		return -EINVAL;
>  	}
>  
> -	if (dz_config->zoom_region.resolution.width
> -	    == asd->sensor_array_res.width
> -	    || dz_config->zoom_region.resolution.height
> -	    == asd->sensor_array_res.height) {
> +	if (dz_config->zoom_region.width == asd->sensor_array_res.width ||
> +	    dz_config->zoom_region.height == asd->sensor_array_res.height) {
>  		/*no need crop region*/
> -		dz_config->zoom_region.origin.x = 0;
> -		dz_config->zoom_region.origin.y = 0;
> -		dz_config->zoom_region.resolution.width = eff_res.width;
> -		dz_config->zoom_region.resolution.height = eff_res.height;
> +		dz_config->zoom_region.left = 0;
> +		dz_config->zoom_region.top = 0;
> +		dz_config->zoom_region.width = eff_res.width;
> +		dz_config->zoom_region.height = eff_res.height;
>  		return 0;
>  	}
>  
> @@ -1783,18 +1781,18 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
>  	 */
>  
>  	if (!IS_ISP2401) {
> -		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
> -						  * eff_res.width
> -						  / asd->sensor_array_res.width;
> -		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
> -						  * eff_res.height
> -						  / asd->sensor_array_res.height;
> -		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
> -							  * eff_res.width
> -							  / asd->sensor_array_res.width;
> -		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
> -							  * eff_res.height
> -							  / asd->sensor_array_res.height;
> +		dz_config->zoom_region.left =
> +			(s32)((long long)dz_config->zoom_region.left *
> +			      eff_res.width / asd->sensor_array_res.width);
> +		dz_config->zoom_region.top =
> +			(s32)((long long)dz_config->zoom_region.top *
> +			      eff_res.height / asd->sensor_array_res.height);
> +		dz_config->zoom_region.width =
> +			(u32)((long long)dz_config->zoom_region.width *
> +			      eff_res.width / asd->sensor_array_res.width);
> +		dz_config->zoom_region.height =
> +			(u32)((long long)dz_config->zoom_region.height *
> +			      eff_res.height / asd->sensor_array_res.height);


Why do we need this new casting?  Is it a bugfix?

I don't love the casts to s32 and u32.  Those are unnecessary.  Also
width and height are s32 so why are we casting to u32?  Same comments
for the other casts later on.

There are more style changes than strictly necessary to just rename the
struct members.

regards,
dan carpenter
[PATCH v2 RESEND v2 2/3] media: atomisp: consolidate statistics buffer allocation
Posted by Karthikey D Kadati 1 month ago 
Refactor atomisp_alloc_css_stat_bufs() to use a new helper function

atomisp_alloc_stat_bufs_list().

This reduces code duplication for allocating 3A, DIS, and metadata

buffers and centralizes the allocation loop logic.

The helper returns -ENOMEM on failure, triggering the existing

cleanup path in the caller which correctly frees any partially

allocated lists.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 123 ++++++++++++------
 1 file changed, 81 insertions(+), 42 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index 5c0a1d92b..9e572b3e6 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -678,13 +678,78 @@ static int atomisp_g_fmt_cap(struct file *file, void *fh,
 	return atomisp_try_fmt_cap(file, fh, f);
 }
 
+static int atomisp_alloc_stat_bufs_list(struct atomisp_sub_device *asd,
+					u16 stream_id,
+					struct list_head *buf_list,
+					int count,
+					enum ia_css_buffer_type type)
+{
+	struct atomisp_s3a_buf *s3a_buf;
+	struct atomisp_dis_buf *dis_buf;
+	struct atomisp_metadata_buf *md_buf;
+
+	while (count--) {
+		switch (type) {
+		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
+			s3a_buf = kzalloc(sizeof(*s3a_buf), GFP_KERNEL);
+			if (!s3a_buf)
+				return -ENOMEM;
+
+			if (atomisp_css_allocate_stat_buffers(asd,
+							      stream_id,
+							      s3a_buf,
+							      NULL,
+							      NULL)) {
+				kfree(s3a_buf);
+				return -ENOMEM;
+			}
+			list_add_tail(&s3a_buf->list, buf_list);
+			break;
+		case IA_CSS_BUFFER_TYPE_DIS_STATISTICS:
+			dis_buf = kzalloc(sizeof(*dis_buf), GFP_KERNEL);
+			if (!dis_buf)
+				return -ENOMEM;
+
+			if (atomisp_css_allocate_stat_buffers(asd,
+							      stream_id,
+							      NULL,
+							      dis_buf,
+							      NULL)) {
+				kfree(dis_buf);
+				return -ENOMEM;
+			}
+			list_add_tail(&dis_buf->list, buf_list);
+			break;
+		case IA_CSS_BUFFER_TYPE_METADATA:
+			md_buf = kzalloc(sizeof(*md_buf), GFP_KERNEL);
+			if (!md_buf)
+				return -ENOMEM;
+
+			if (atomisp_css_allocate_stat_buffers(asd,
+							      stream_id,
+							      NULL,
+							      NULL,
+							      md_buf)) {
+				kfree(md_buf);
+				return -ENOMEM;
+			}
+			list_add_tail(&md_buf->list, buf_list);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
 int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
-				uint16_t stream_id)
+				u16 stream_id)
 {
 	struct atomisp_device *isp = asd->isp;
-	struct atomisp_s3a_buf *s3a_buf = NULL, *_s3a_buf;
-	struct atomisp_dis_buf *dis_buf = NULL, *_dis_buf;
-	struct atomisp_metadata_buf *md_buf = NULL, *_md_buf;
+	struct atomisp_dis_buf *dis_buf, *_dis_buf;
+	struct atomisp_s3a_buf *s3a_buf, *_s3a_buf;
+	struct atomisp_metadata_buf *md_buf, *_md_buf;
 	int count;
 	struct ia_css_dvs_grid_info *dvs_grid_info =
 	    atomisp_css_get_dvs_grid_info(&asd->params.curr_grid_info);
@@ -695,37 +760,20 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 		count = ATOMISP_CSS_Q_DEPTH +
 			ATOMISP_S3A_BUF_QUEUE_DEPTH_FOR_HAL;
 		dev_dbg(isp->dev, "allocating %d 3a buffers\n", count);
-		while (count--) {
-			s3a_buf = kzalloc(sizeof(struct atomisp_s3a_buf), GFP_KERNEL);
-			if (!s3a_buf)
-				goto error;
-
-			if (atomisp_css_allocate_stat_buffers(
-				asd, stream_id, s3a_buf, NULL, NULL)) {
-				kfree(s3a_buf);
-				goto error;
-			}
-
-			list_add_tail(&s3a_buf->list, &asd->s3a_stats);
-		}
+		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+						 &asd->s3a_stats, count,
+						 IA_CSS_BUFFER_TYPE_3A_STATISTICS))
+			goto error;
 	}
 
 	if (list_empty(&asd->dis_stats) && dvs_grid_info &&
 	    dvs_grid_info->enable) {
 		count = ATOMISP_CSS_Q_DEPTH + 1;
 		dev_dbg(isp->dev, "allocating %d dis buffers\n", count);
-		while (count--) {
-			dis_buf = kzalloc(sizeof(struct atomisp_dis_buf), GFP_KERNEL);
-			if (!dis_buf)
-				goto error;
-			if (atomisp_css_allocate_stat_buffers(
-				asd, stream_id, NULL, dis_buf, NULL)) {
-				kfree(dis_buf);
-				goto error;
-			}
-
-			list_add_tail(&dis_buf->list, &asd->dis_stats);
-		}
+		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+						 &asd->dis_stats, count,
+						 IA_CSS_BUFFER_TYPE_DIS_STATISTICS))
+			goto error;
 	}
 
 	for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
@@ -736,19 +784,10 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 				ATOMISP_METADATA_QUEUE_DEPTH_FOR_HAL;
 			dev_dbg(isp->dev, "allocating %d metadata buffers for type %d\n",
 				count, i);
-			while (count--) {
-				md_buf = kzalloc(sizeof(struct atomisp_metadata_buf),
-						 GFP_KERNEL);
-				if (!md_buf)
-					goto error;
-
-				if (atomisp_css_allocate_stat_buffers(
-					asd, stream_id, NULL, NULL, md_buf)) {
-					kfree(md_buf);
-					goto error;
-				}
-				list_add_tail(&md_buf->list, &asd->metadata[i]);
-			}
+			if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+							 &asd->metadata[i], count,
+							 IA_CSS_BUFFER_TYPE_METADATA))
+				goto error;
 		}
 	}
 	return 0;
-- 
2.43.0
Re: [PATCH v2 RESEND v2 2/3] media: atomisp: consolidate statistics buffer allocation
Posted by Dan Carpenter 1 month ago 
On Wed, Jan 07, 2026 at 07:18:43PM +0530, Karthikey D Kadati wrote:
> Refactor atomisp_alloc_css_stat_bufs() to use a new helper function
> 
> atomisp_alloc_stat_bufs_list().
> 
> This reduces code duplication for allocating 3A, DIS, and metadata
> 
> buffers and centralizes the allocation loop logic.
> 
> The helper returns -ENOMEM on failure, triggering the existing
> 
> cleanup path in the caller which correctly frees any partially
> 
> allocated lists.
> 
> Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
> ---
>  .../staging/media/atomisp/pci/atomisp_ioctl.c | 123 ++++++++++++------
>  1 file changed, 81 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
> index 5c0a1d92b..9e572b3e6 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
> @@ -678,13 +678,78 @@ static int atomisp_g_fmt_cap(struct file *file, void *fh,
>  	return atomisp_try_fmt_cap(file, fh, f);
>  }
>  
> +static int atomisp_alloc_stat_bufs_list(struct atomisp_sub_device *asd,
> +					u16 stream_id,
> +					struct list_head *buf_list,
> +					int count,
> +					enum ia_css_buffer_type type)
> +{
> +	struct atomisp_s3a_buf *s3a_buf;
> +	struct atomisp_dis_buf *dis_buf;
> +	struct atomisp_metadata_buf *md_buf;
> +
> +	while (count--) {
> +		switch (type) {
> +		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
> +			s3a_buf = kzalloc(sizeof(*s3a_buf), GFP_KERNEL);
> +			if (!s3a_buf)
> +				return -ENOMEM;
> +
> +			if (atomisp_css_allocate_stat_buffers(asd,
> +							      stream_id,
> +							      s3a_buf,
> +							      NULL,
> +							      NULL)) {
> +				kfree(s3a_buf);
> +				return -ENOMEM;
> +			}

The caller doesn't propogate the error code either so this doesn't
affect runtime, but generally we should propogate error codes.

	ret = atomisp_css_allocate_stat_buffers();
	if (ret) {
		kfree(s3a_buf);
		return ret;
	}

Same later as well...

regards,
dan carpenter
[PATCH v2 RESEND v2 3/3] media: atomisp: propagate errors from ISP xnr and IRQ enable
Posted by Karthikey D Kadati 1 month ago 
Propagate the return value of atomisp_css_capture_enable_xnr() in

atomisp_xnr().

Also check the return value of atomisp_css_irq_enable() and log an

error once using dev_err_once() to avoid flooding dmesg.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 drivers/staging/media/atomisp/pci/atomisp_cmd.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 4ed6b8aea..da2481af2 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -874,7 +874,8 @@ void atomisp_assert_recovery_work(struct work_struct *work)
 	if (!isp->asd.streaming)
 		goto out_unlock;
 
-	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false);
+	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false))
+		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
 
 	spin_lock_irqsave(&isp->lock, flags);
 	isp->asd.streaming = false;
@@ -925,8 +926,9 @@ void atomisp_assert_recovery_work(struct work_struct *work)
 
 	atomisp_csi2_configure(&isp->asd);
 
-	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
-			       atomisp_css_valid_sof(isp));
+	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
+				   atomisp_css_valid_sof(isp)))
+		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
 
 	if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_AUTO, true) < 0)
 		dev_dbg(isp->dev, "DFS auto failed while recovering!\n");
@@ -1196,9 +1198,7 @@ int atomisp_xnr(struct atomisp_sub_device *asd, int flag,
 		return 0;
 	}
 
-	atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
-
-	return 0;
+	return atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
 }
 
 /*
-- 
2.43.0
Re: [PATCH v2 RESEND v2 3/3] media: atomisp: propagate errors from ISP xnr and IRQ enable
Posted by Dan Carpenter 1 month ago 
On Wed, Jan 07, 2026 at 07:18:44PM +0530, Karthikey D Kadati wrote:
> Propagate the return value of atomisp_css_capture_enable_xnr() in
> 
> atomisp_xnr().
> 
> Also check the return value of atomisp_css_irq_enable() and log an
> 
> error once using dev_err_once() to avoid flooding dmesg.
> 

Leave off the "to avoid flooding dmesg" because otherwise it makes it
sound like we were flooding dmesg before.  Just say:  "Also print an
error message if atomisp_css_irq_enable() fails".

regards,
dan carpenter
[PATCH v2 0/3] media: atomisp: refactoring and fixes for V4L2 compliance
Posted by Karthikey D Kadati 1 month ago 
This patch series addresses maintainer feedback and fixes build errors
in the atomisp driver.

Patch 1: Standardizes the 'Bridge' structs significantly by using v4l2_rect instead of custom shadow structs and aligning ia_css_region members with V4L2 conventions.
Patch 2: Introduces a helper function for statistics buffer allocation to reduce code duplication and centralize error handling logic.
Patch 3: Adds missing error propagation for IRQ enable and XNR configuration to improve robustness.

This series is based on the latest staging/next tree and has been verified with checkpatch.pl --strict.

Karthikey D Kadati (3):
  media: atomisp: replace shadow zoom structs with v4l2_rect
  media: atomisp: consolidate statistics buffer allocation
  media: atomisp: propagate errors from ISP xnr and IRQ enable

 .../media/atomisp/include/linux/atomisp.h     |  19 +--
 .../staging/media/atomisp/pci/atomisp_cmd.c   | 142 +++++++++---------
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 123 +++++++++------
 .../staging/media/atomisp/pci/ia_css_types.h  |   6 +-
 .../staging/media/atomisp/pci/sh_css_params.c |  16 +-
 5 files changed, 166 insertions(+), 140 deletions(-)

-- 
2.43.0
[PATCH v2 1/3] media: atomisp: replace shadow zoom structs with v4l2_rect
Posted by Karthikey D Kadati 1 month ago 
Remove custom atomisp_zoom_point and atomisp_zoom_region structs and

usage in favor of standard v4l2_rect within atomisp_dz_config.

This aligns the driver with V4L2 standards and removes unnecessary

custom types.

Also standardizes the internal ia_css_region struct members to match

V4L2 naming conventions (left, top, width, height) to facilitate the

bridge mapping.

Updates atomisp_cmd.c and sh_css_params.c to use the new member names

and ensures safe math using long long casts to prevent overflow during

resolution scaling.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 .../media/atomisp/include/linux/atomisp.h     |  19 +--
 .../staging/media/atomisp/pci/atomisp_cmd.c   | 130 +++++++++---------
 .../staging/media/atomisp/pci/ia_css_types.h  |   6 +-
 .../staging/media/atomisp/pci/sh_css_params.c |  16 +--
 4 files changed, 79 insertions(+), 92 deletions(-)

diff --git a/drivers/staging/media/atomisp/include/linux/atomisp.h b/drivers/staging/media/atomisp/include/linux/atomisp.h
index fcf116cc4..b5cce12c1 100644
--- a/drivers/staging/media/atomisp/include/linux/atomisp.h
+++ b/drivers/staging/media/atomisp/include/linux/atomisp.h
@@ -326,27 +326,12 @@ struct atomisp_resolution {
 	u32 height; /** Height */
 };
 
-/*
- * This specifies the coordinates (x,y)
- */
-struct atomisp_zoom_point {
-	s32 x; /** x coordinate */
-	s32 y; /** y coordinate */
-};
-
-/*
- * This specifies the region
- */
-struct atomisp_zoom_region {
-	struct atomisp_zoom_point
-		origin; /* Starting point coordinates for the region */
-	struct atomisp_resolution resolution; /* Region resolution */
-};
+#include <linux/videodev2.h>
 
 struct atomisp_dz_config {
 	u32 dx; /** Horizontal zoom factor */
 	u32 dy; /** Vertical zoom factor */
-	struct atomisp_zoom_region zoom_region; /** region for zoom */
+	struct v4l2_rect zoom_region; /** region for zoom */
 };
 
 struct atomisp_parm {
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 327836372..4ed6b8aea 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -1764,15 +1764,13 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 		return -EINVAL;
 	}
 
-	if (dz_config->zoom_region.resolution.width
-	    == asd->sensor_array_res.width
-	    || dz_config->zoom_region.resolution.height
-	    == asd->sensor_array_res.height) {
+	if (dz_config->zoom_region.width == asd->sensor_array_res.width ||
+	    dz_config->zoom_region.height == asd->sensor_array_res.height) {
 		/*no need crop region*/
-		dz_config->zoom_region.origin.x = 0;
-		dz_config->zoom_region.origin.y = 0;
-		dz_config->zoom_region.resolution.width = eff_res.width;
-		dz_config->zoom_region.resolution.height = eff_res.height;
+		dz_config->zoom_region.left = 0;
+		dz_config->zoom_region.top = 0;
+		dz_config->zoom_region.width = eff_res.width;
+		dz_config->zoom_region.height = eff_res.height;
 		return 0;
 	}
 
@@ -1783,18 +1781,18 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 	 */
 
 	if (!IS_ISP2401) {
-		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
-						  * eff_res.width
-						  / asd->sensor_array_res.width;
-		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
-						  * eff_res.height
-						  / asd->sensor_array_res.height;
-		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
-							  * eff_res.width
-							  / asd->sensor_array_res.width;
-		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
-							  * eff_res.height
-							  / asd->sensor_array_res.height;
+		dz_config->zoom_region.left =
+			(s32)((long long)dz_config->zoom_region.left *
+			      eff_res.width / asd->sensor_array_res.width);
+		dz_config->zoom_region.top =
+			(s32)((long long)dz_config->zoom_region.top *
+			      eff_res.height / asd->sensor_array_res.height);
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.width *
+			      eff_res.width / asd->sensor_array_res.width);
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.height *
+			      eff_res.height / asd->sensor_array_res.height);
 		/*
 		 * Set same ratio of crop region resolution and current pipe output
 		 * resolution
@@ -1821,62 +1819,66 @@ int atomisp_calculate_real_zoom_region(struct atomisp_sub_device *asd,
 				   - asd->sensor_array_res.width
 				   * out_res.height / out_res.width;
 			h_offset = h_offset / 2;
-			if (dz_config->zoom_region.origin.y < h_offset)
-				dz_config->zoom_region.origin.y = 0;
+			if (dz_config->zoom_region.top < h_offset)
+				dz_config->zoom_region.top = 0;
 			else
-				dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y - h_offset;
+				dz_config->zoom_region.top -= h_offset;
 			w_offset = 0;
 		} else {
 			w_offset = asd->sensor_array_res.width
 				   - asd->sensor_array_res.height
 				   * out_res.width / out_res.height;
 			w_offset = w_offset / 2;
-			if (dz_config->zoom_region.origin.x < w_offset)
-				dz_config->zoom_region.origin.x = 0;
+			if (dz_config->zoom_region.left < w_offset)
+				dz_config->zoom_region.left = 0;
 			else
-				dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x - w_offset;
+				dz_config->zoom_region.left -= w_offset;
 			h_offset = 0;
 		}
-		dz_config->zoom_region.origin.x = dz_config->zoom_region.origin.x
-						  * eff_res.width
-						  / (asd->sensor_array_res.width - 2 * w_offset);
-		dz_config->zoom_region.origin.y = dz_config->zoom_region.origin.y
-						  * eff_res.height
-						  / (asd->sensor_array_res.height - 2 * h_offset);
-		dz_config->zoom_region.resolution.width = dz_config->zoom_region.resolution.width
-						  * eff_res.width
-						  / (asd->sensor_array_res.width - 2 * w_offset);
-		dz_config->zoom_region.resolution.height = dz_config->zoom_region.resolution.height
-						  * eff_res.height
-						  / (asd->sensor_array_res.height - 2 * h_offset);
-	}
-
-	if (out_res.width * dz_config->zoom_region.resolution.height
-	    > dz_config->zoom_region.resolution.width * out_res.height) {
-		dz_config->zoom_region.resolution.height =
-		    dz_config->zoom_region.resolution.width
-		    * out_res.height / out_res.width;
+		dz_config->zoom_region.left =
+			(s32)((long long)dz_config->zoom_region.left *
+			      eff_res.width /
+			      (asd->sensor_array_res.width - 2 * w_offset));
+		dz_config->zoom_region.top =
+			(s32)((long long)dz_config->zoom_region.top *
+			      eff_res.height /
+			      (asd->sensor_array_res.height - 2 * h_offset));
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.width *
+			      eff_res.width /
+			      (asd->sensor_array_res.width - 2 * w_offset));
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.height *
+			      eff_res.height /
+			      (asd->sensor_array_res.height - 2 * h_offset));
+	}
+
+	if ((long long)out_res.width * dz_config->zoom_region.height >
+	    (long long)dz_config->zoom_region.width * out_res.height) {
+		dz_config->zoom_region.height =
+			(u32)((long long)dz_config->zoom_region.width *
+			      out_res.height / out_res.width);
 	} else {
-		dz_config->zoom_region.resolution.width =
-		    dz_config->zoom_region.resolution.height
-		    * out_res.width / out_res.height;
+		dz_config->zoom_region.width =
+			(u32)((long long)dz_config->zoom_region.height *
+			      out_res.width / out_res.height);
 	}
 	dev_dbg(asd->isp->dev,
 		"%s crop region:(%d,%d),(%d,%d) eff_res(%d, %d) array_size(%d,%d) out_res(%d, %d)\n",
-		__func__, dz_config->zoom_region.origin.x,
-		dz_config->zoom_region.origin.y,
-		dz_config->zoom_region.resolution.width,
-		dz_config->zoom_region.resolution.height,
+		__func__, dz_config->zoom_region.left,
+		dz_config->zoom_region.top,
+		dz_config->zoom_region.width,
+		dz_config->zoom_region.height,
 		eff_res.width, eff_res.height,
 		asd->sensor_array_res.width,
 		asd->sensor_array_res.height,
 		out_res.width, out_res.height);
 
-	if ((dz_config->zoom_region.origin.x +
-	     dz_config->zoom_region.resolution.width
+	if ((dz_config->zoom_region.left +
+	     dz_config->zoom_region.width
 	     > eff_res.width) ||
-	    (dz_config->zoom_region.origin.y +
-	     dz_config->zoom_region.resolution.height
+	    (dz_config->zoom_region.top +
+	     dz_config->zoom_region.height
 	     > eff_res.height))
 		return -EINVAL;
 
@@ -1901,10 +1903,10 @@ static bool atomisp_check_zoom_region(
 
 	config.width = asd->sensor_array_res.width;
 	config.height = asd->sensor_array_res.height;
-	w = dz_config->zoom_region.origin.x +
-	    dz_config->zoom_region.resolution.width;
-	h = dz_config->zoom_region.origin.y +
-	    dz_config->zoom_region.resolution.height;
+	w = dz_config->zoom_region.left +
+	    dz_config->zoom_region.width;
+	h = dz_config->zoom_region.top +
+	    dz_config->zoom_region.height;
 
 	if ((w <= config.width) && (h <= config.height) && w > 0 && h > 0)
 		flag = true;
@@ -1912,10 +1914,10 @@ static bool atomisp_check_zoom_region(
 		/* setting error zoom region */
 		dev_err(asd->isp->dev,
 			"%s zoom region ERROR:dz_config:(%d,%d),(%d,%d)array_res(%d, %d)\n",
-			__func__, dz_config->zoom_region.origin.x,
-			dz_config->zoom_region.origin.y,
-			dz_config->zoom_region.resolution.width,
-			dz_config->zoom_region.resolution.height,
+			__func__, dz_config->zoom_region.left,
+			dz_config->zoom_region.top,
+			dz_config->zoom_region.width,
+			dz_config->zoom_region.height,
 			config.width, config.height);
 
 	return flag;
diff --git a/drivers/staging/media/atomisp/pci/ia_css_types.h b/drivers/staging/media/atomisp/pci/ia_css_types.h
index 676d7e20b..5c21a5415 100644
--- a/drivers/staging/media/atomisp/pci/ia_css_types.h
+++ b/drivers/staging/media/atomisp/pci/ia_css_types.h
@@ -431,8 +431,10 @@ struct ia_css_point {
  * This specifies the region
  */
 struct ia_css_region {
-	struct ia_css_point origin; /** Starting point coordinates for the region */
-	struct ia_css_resolution resolution; /** Region resolution */
+	s32 left; /** Starting point coordinates for the region */
+	s32 top;
+	s32 width; /** Region resolution */
+	s32 height;
 };
 
 /**
diff --git a/drivers/staging/media/atomisp/pci/sh_css_params.c b/drivers/staging/media/atomisp/pci/sh_css_params.c
index 11d62313c..0435f20a7 100644
--- a/drivers/staging/media/atomisp/pci/sh_css_params.c
+++ b/drivers/staging/media/atomisp/pci/sh_css_params.c
@@ -658,9 +658,7 @@ static const struct ia_css_dz_config default_dz_config = {
 	HRT_GDC_N,
 	HRT_GDC_N,
 	{
-		\
-		{0, 0}, \
-		{0, 0}, \
+		0, 0, 0, 0
 	}
 };
 
@@ -1210,8 +1208,8 @@ ia_css_process_zoom_and_motion(
 		}
 
 		assert(stage->stage_num < SH_CSS_MAX_STAGES);
-		if (params->dz_config.zoom_region.resolution.width == 0 &&
-		    params->dz_config.zoom_region.resolution.height == 0) {
+		if (params->dz_config.zoom_region.width == 0 &&
+		    params->dz_config.zoom_region.height == 0) {
 			sh_css_update_uds_and_crop_info(
 			    &info->sp,
 			    &binary->in_frame_info,
@@ -4096,10 +4094,10 @@ sh_css_update_uds_and_crop_info_based_on_zoom_region(
 	assert(motion_vector);
 	assert(uds);
 	assert(sp_out_crop_pos);
-	x0 = zoom->zoom_region.origin.x;
-	y0 = zoom->zoom_region.origin.y;
-	x1 = zoom->zoom_region.resolution.width + x0;
-	y1 = zoom->zoom_region.resolution.height + y0;
+	x0 = zoom->zoom_region.left;
+	y0 = zoom->zoom_region.top;
+	x1 = zoom->zoom_region.width + x0;
+	y1 = zoom->zoom_region.height + y0;
 
 	if ((x0 > x1) || (y0 > y1) || (x1 > pipe_in_res.width) || (y1 > pipe_in_res.height))
 		return -EINVAL;
-- 
2.43.0
[PATCH v2 2/3] media: atomisp: consolidate statistics buffer allocation
Posted by Karthikey D Kadati 1 month ago 
Refactor atomisp_alloc_css_stat_bufs() to use a new helper function

atomisp_alloc_stat_bufs_list().

This reduces code duplication for allocating 3A, DIS, and metadata

buffers and centralizes the allocation loop logic.

The helper returns -ENOMEM on failure, triggering the existing

cleanup path in the caller which correctly frees any partially

allocated lists.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 123 ++++++++++++------
 1 file changed, 81 insertions(+), 42 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index 5c0a1d92b..9e572b3e6 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -678,13 +678,78 @@ static int atomisp_g_fmt_cap(struct file *file, void *fh,
 	return atomisp_try_fmt_cap(file, fh, f);
 }
 
+static int atomisp_alloc_stat_bufs_list(struct atomisp_sub_device *asd,
+					u16 stream_id,
+					struct list_head *buf_list,
+					int count,
+					enum ia_css_buffer_type type)
+{
+	struct atomisp_s3a_buf *s3a_buf;
+	struct atomisp_dis_buf *dis_buf;
+	struct atomisp_metadata_buf *md_buf;
+
+	while (count--) {
+		switch (type) {
+		case IA_CSS_BUFFER_TYPE_3A_STATISTICS:
+			s3a_buf = kzalloc(sizeof(*s3a_buf), GFP_KERNEL);
+			if (!s3a_buf)
+				return -ENOMEM;
+
+			if (atomisp_css_allocate_stat_buffers(asd,
+							      stream_id,
+							      s3a_buf,
+							      NULL,
+							      NULL)) {
+				kfree(s3a_buf);
+				return -ENOMEM;
+			}
+			list_add_tail(&s3a_buf->list, buf_list);
+			break;
+		case IA_CSS_BUFFER_TYPE_DIS_STATISTICS:
+			dis_buf = kzalloc(sizeof(*dis_buf), GFP_KERNEL);
+			if (!dis_buf)
+				return -ENOMEM;
+
+			if (atomisp_css_allocate_stat_buffers(asd,
+							      stream_id,
+							      NULL,
+							      dis_buf,
+							      NULL)) {
+				kfree(dis_buf);
+				return -ENOMEM;
+			}
+			list_add_tail(&dis_buf->list, buf_list);
+			break;
+		case IA_CSS_BUFFER_TYPE_METADATA:
+			md_buf = kzalloc(sizeof(*md_buf), GFP_KERNEL);
+			if (!md_buf)
+				return -ENOMEM;
+
+			if (atomisp_css_allocate_stat_buffers(asd,
+							      stream_id,
+							      NULL,
+							      NULL,
+							      md_buf)) {
+				kfree(md_buf);
+				return -ENOMEM;
+			}
+			list_add_tail(&md_buf->list, buf_list);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
 int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
-				uint16_t stream_id)
+				u16 stream_id)
 {
 	struct atomisp_device *isp = asd->isp;
-	struct atomisp_s3a_buf *s3a_buf = NULL, *_s3a_buf;
-	struct atomisp_dis_buf *dis_buf = NULL, *_dis_buf;
-	struct atomisp_metadata_buf *md_buf = NULL, *_md_buf;
+	struct atomisp_dis_buf *dis_buf, *_dis_buf;
+	struct atomisp_s3a_buf *s3a_buf, *_s3a_buf;
+	struct atomisp_metadata_buf *md_buf, *_md_buf;
 	int count;
 	struct ia_css_dvs_grid_info *dvs_grid_info =
 	    atomisp_css_get_dvs_grid_info(&asd->params.curr_grid_info);
@@ -695,37 +760,20 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 		count = ATOMISP_CSS_Q_DEPTH +
 			ATOMISP_S3A_BUF_QUEUE_DEPTH_FOR_HAL;
 		dev_dbg(isp->dev, "allocating %d 3a buffers\n", count);
-		while (count--) {
-			s3a_buf = kzalloc(sizeof(struct atomisp_s3a_buf), GFP_KERNEL);
-			if (!s3a_buf)
-				goto error;
-
-			if (atomisp_css_allocate_stat_buffers(
-				asd, stream_id, s3a_buf, NULL, NULL)) {
-				kfree(s3a_buf);
-				goto error;
-			}
-
-			list_add_tail(&s3a_buf->list, &asd->s3a_stats);
-		}
+		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+						 &asd->s3a_stats, count,
+						 IA_CSS_BUFFER_TYPE_3A_STATISTICS))
+			goto error;
 	}
 
 	if (list_empty(&asd->dis_stats) && dvs_grid_info &&
 	    dvs_grid_info->enable) {
 		count = ATOMISP_CSS_Q_DEPTH + 1;
 		dev_dbg(isp->dev, "allocating %d dis buffers\n", count);
-		while (count--) {
-			dis_buf = kzalloc(sizeof(struct atomisp_dis_buf), GFP_KERNEL);
-			if (!dis_buf)
-				goto error;
-			if (atomisp_css_allocate_stat_buffers(
-				asd, stream_id, NULL, dis_buf, NULL)) {
-				kfree(dis_buf);
-				goto error;
-			}
-
-			list_add_tail(&dis_buf->list, &asd->dis_stats);
-		}
+		if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+						 &asd->dis_stats, count,
+						 IA_CSS_BUFFER_TYPE_DIS_STATISTICS))
+			goto error;
 	}
 
 	for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
@@ -736,19 +784,10 @@ int atomisp_alloc_css_stat_bufs(struct atomisp_sub_device *asd,
 				ATOMISP_METADATA_QUEUE_DEPTH_FOR_HAL;
 			dev_dbg(isp->dev, "allocating %d metadata buffers for type %d\n",
 				count, i);
-			while (count--) {
-				md_buf = kzalloc(sizeof(struct atomisp_metadata_buf),
-						 GFP_KERNEL);
-				if (!md_buf)
-					goto error;
-
-				if (atomisp_css_allocate_stat_buffers(
-					asd, stream_id, NULL, NULL, md_buf)) {
-					kfree(md_buf);
-					goto error;
-				}
-				list_add_tail(&md_buf->list, &asd->metadata[i]);
-			}
+			if (atomisp_alloc_stat_bufs_list(asd, stream_id,
+							 &asd->metadata[i], count,
+							 IA_CSS_BUFFER_TYPE_METADATA))
+				goto error;
 		}
 	}
 	return 0;
-- 
2.43.0
[PATCH v2 3/3] media: atomisp: propagate errors from ISP xnr and IRQ enable
Posted by Karthikey D Kadati 1 month ago 
Propagate the return value of atomisp_css_capture_enable_xnr() in

atomisp_xnr().

Also check the return value of atomisp_css_irq_enable() and log an

error once using dev_err_once() to avoid flooding dmesg.

Signed-off-by: Karthikey D Kadati <karthikey3608@gmail.com>
---
 drivers/staging/media/atomisp/pci/atomisp_cmd.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 4ed6b8aea..da2481af2 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -874,7 +874,8 @@ void atomisp_assert_recovery_work(struct work_struct *work)
 	if (!isp->asd.streaming)
 		goto out_unlock;
 
-	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false);
+	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false))
+		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
 
 	spin_lock_irqsave(&isp->lock, flags);
 	isp->asd.streaming = false;
@@ -925,8 +926,9 @@ void atomisp_assert_recovery_work(struct work_struct *work)
 
 	atomisp_csi2_configure(&isp->asd);
 
-	atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
-			       atomisp_css_valid_sof(isp));
+	if (atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF,
+				   atomisp_css_valid_sof(isp)))
+		dev_err_once(isp->dev, "atomisp_css_irq_enable failed\n");
 
 	if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_AUTO, true) < 0)
 		dev_dbg(isp->dev, "DFS auto failed while recovering!\n");
@@ -1196,9 +1198,7 @@ int atomisp_xnr(struct atomisp_sub_device *asd, int flag,
 		return 0;
 	}
 
-	atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
-
-	return 0;
+	return atomisp_css_capture_enable_xnr(asd, !!*xnr_enable);
 }
 
 /*
-- 
2.43.0

Patchew 2.1-devel-b67e4c2

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