[v2] media: uvcvideo: Remove duplicated cap/out code

[PATCH v2] media: uvcvideo: Remove duplicated cap/out code

Posted by Ricardo Ribalda 3 weeks, 6 days ago

The *_vid_cap and *_vid_out helpers seem to be identical:
- Remove all the cap/out duplicated code.
- Remove s/g_parm helpers
- Reorder uvc_ioctl_ops

And now that we are at it, fix a comment for uvc_acquire_privileges()

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
Unless I miss something, cap and out helpers are identical. So there is
no need to duplicate code
---
Changes in v2:
- Add missing acquire_privileges.
- Also remove helper for s/g_parm.
- Reorder callbacks.
- Link to v1: https://lore.kernel.org/r/20241127-uvc-dup-cap-out-v1-1-1bdcad2dabb0@chromium.org
---
 drivers/media/usb/uvc/uvc_v4l2.c | 162 +++++++++++----------------------------
 1 file changed, 43 insertions(+), 119 deletions(-)

diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
index 97c5407f6603..42f0f8a89865 100644
--- a/drivers/media/usb/uvc/uvc_v4l2.c
+++ b/drivers/media/usb/uvc/uvc_v4l2.c
@@ -26,6 +26,8 @@
 
 #include "uvcvideo.h"
 
+static int uvc_acquire_privileges(struct uvc_fh *handle);
+
 static int uvc_control_add_xu_mapping(struct uvc_video_chain *chain,
 				      struct uvc_control_mapping *map,
 				      const struct uvc_xu_control_mapping *xmap)
@@ -361,9 +363,11 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
 	return ret;
 }
 
-static int uvc_v4l2_get_format(struct uvc_streaming *stream,
-	struct v4l2_format *fmt)
+static int uvc_ioctl_g_fmt(struct file *file, void *fh,
+			   struct v4l2_format *fmt)
 {
+	struct uvc_fh *handle = fh;
+	struct uvc_streaming *stream = handle->stream;
 	const struct uvc_format *format;
 	const struct uvc_frame *frame;
 	int ret = 0;
@@ -395,14 +399,20 @@ static int uvc_v4l2_get_format(struct uvc_streaming *stream,
 	return ret;
 }
 
-static int uvc_v4l2_set_format(struct uvc_streaming *stream,
-	struct v4l2_format *fmt)
+static int uvc_ioctl_s_fmt(struct file *file, void *fh,
+			   struct v4l2_format *fmt)
 {
+	struct uvc_fh *handle = fh;
+	struct uvc_streaming *stream = handle->stream;
 	struct uvc_streaming_control probe;
 	const struct uvc_format *format;
 	const struct uvc_frame *frame;
 	int ret;
 
+	ret = uvc_acquire_privileges(handle);
+	if (ret)
+		return ret;
+
 	if (fmt->type != stream->type)
 		return -EINVAL;
 
@@ -426,10 +436,12 @@ static int uvc_v4l2_set_format(struct uvc_streaming *stream,
 	return ret;
 }
 
-static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream,
-		struct v4l2_streamparm *parm)
+static int uvc_ioctl_g_parm(struct file *file, void *fh,
+			    struct v4l2_streamparm *parm)
 {
 	u32 numerator, denominator;
+	struct uvc_fh *handle = fh;
+	struct uvc_streaming *stream = handle->stream;
 
 	if (parm->type != stream->type)
 		return -EINVAL;
@@ -461,9 +473,11 @@ static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream,
 	return 0;
 }
 
-static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
-		struct v4l2_streamparm *parm)
+static int uvc_ioctl_s_parm(struct file *file, void *fh,
+			    struct v4l2_streamparm *parm)
 {
+	struct uvc_fh *handle = fh;
+	struct uvc_streaming *stream = handle->stream;
 	struct uvc_streaming_control probe;
 	struct v4l2_fract timeperframe;
 	const struct uvc_format *format;
@@ -472,6 +486,10 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
 	unsigned int i;
 	int ret;
 
+	ret = uvc_acquire_privileges(handle);
+	if (ret < 0)
+		return ret;
+
 	if (parm->type != stream->type)
 		return -EINVAL;
 
@@ -573,6 +591,7 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
  * - VIDIOC_S_INPUT
  * - VIDIOC_S_PARM
  * - VIDIOC_S_FMT
+ * - VIDIOC_CREATE_BUFS
  * - VIDIOC_REQBUFS
  */
 static int uvc_acquire_privileges(struct uvc_fh *handle)
@@ -685,11 +704,13 @@ static int uvc_ioctl_querycap(struct file *file, void *fh,
 	return 0;
 }
 
-static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream,
+static int uvc_ioctl_enum_fmt(struct file *file, void *fh,
 			      struct v4l2_fmtdesc *fmt)
 {
-	const struct uvc_format *format;
+	struct uvc_fh *handle = fh;
+	struct uvc_streaming *stream = handle->stream;
 	enum v4l2_buf_type type = fmt->type;
+	const struct uvc_format *format;
 	u32 index = fmt->index;
 
 	if (fmt->type != stream->type || fmt->index >= stream->nformats)
@@ -707,82 +728,8 @@ static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream,
 	return 0;
 }
 
-static int uvc_ioctl_enum_fmt_vid_cap(struct file *file, void *fh,
-				      struct v4l2_fmtdesc *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-
-	return uvc_ioctl_enum_fmt(stream, fmt);
-}
-
-static int uvc_ioctl_enum_fmt_vid_out(struct file *file, void *fh,
-				      struct v4l2_fmtdesc *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-
-	return uvc_ioctl_enum_fmt(stream, fmt);
-}
-
-static int uvc_ioctl_g_fmt_vid_cap(struct file *file, void *fh,
-				   struct v4l2_format *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-
-	return uvc_v4l2_get_format(stream, fmt);
-}
-
-static int uvc_ioctl_g_fmt_vid_out(struct file *file, void *fh,
-				   struct v4l2_format *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-
-	return uvc_v4l2_get_format(stream, fmt);
-}
-
-static int uvc_ioctl_s_fmt_vid_cap(struct file *file, void *fh,
-				   struct v4l2_format *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-	int ret;
-
-	ret = uvc_acquire_privileges(handle);
-	if (ret < 0)
-		return ret;
-
-	return uvc_v4l2_set_format(stream, fmt);
-}
-
-static int uvc_ioctl_s_fmt_vid_out(struct file *file, void *fh,
-				   struct v4l2_format *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-	int ret;
-
-	ret = uvc_acquire_privileges(handle);
-	if (ret < 0)
-		return ret;
-
-	return uvc_v4l2_set_format(stream, fmt);
-}
-
-static int uvc_ioctl_try_fmt_vid_cap(struct file *file, void *fh,
-				     struct v4l2_format *fmt)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-	struct uvc_streaming_control probe;
-
-	return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL);
-}
-
-static int uvc_ioctl_try_fmt_vid_out(struct file *file, void *fh,
-				     struct v4l2_format *fmt)
+static int uvc_ioctl_try_fmt(struct file *file, void *fh,
+			     struct v4l2_format *fmt)
 {
 	struct uvc_fh *handle = fh;
 	struct uvc_streaming *stream = handle->stream;
@@ -1212,29 +1159,6 @@ static int uvc_ioctl_g_selection(struct file *file, void *fh,
 	return 0;
 }
 
-static int uvc_ioctl_g_parm(struct file *file, void *fh,
-			    struct v4l2_streamparm *parm)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-
-	return uvc_v4l2_get_streamparm(stream, parm);
-}
-
-static int uvc_ioctl_s_parm(struct file *file, void *fh,
-			    struct v4l2_streamparm *parm)
-{
-	struct uvc_fh *handle = fh;
-	struct uvc_streaming *stream = handle->stream;
-	int ret;
-
-	ret = uvc_acquire_privileges(handle);
-	if (ret < 0)
-		return ret;
-
-	return uvc_v4l2_set_streamparm(stream, parm);
-}
-
 static int uvc_ioctl_enum_framesizes(struct file *file, void *fh,
 				     struct v4l2_frmsizeenum *fsize)
 {
@@ -1543,15 +1467,17 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
 #endif
 
 const struct v4l2_ioctl_ops uvc_ioctl_ops = {
+	.vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt,
+	.vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt,
+	.vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt,
+	.vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt,
+	.vidioc_g_parm = uvc_ioctl_g_parm,
+	.vidioc_s_parm = uvc_ioctl_s_parm,
 	.vidioc_querycap = uvc_ioctl_querycap,
-	.vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt_vid_cap,
-	.vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt_vid_out,
-	.vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt_vid_cap,
-	.vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt_vid_out,
-	.vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt_vid_cap,
-	.vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt_vid_out,
-	.vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt_vid_cap,
-	.vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt_vid_out,
+	.vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt,
+	.vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt,
+	.vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt,
+	.vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt,
 	.vidioc_reqbufs = uvc_ioctl_reqbufs,
 	.vidioc_querybuf = uvc_ioctl_querybuf,
 	.vidioc_qbuf = uvc_ioctl_qbuf,
@@ -1570,8 +1496,6 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = {
 	.vidioc_try_ext_ctrls = uvc_ioctl_try_ext_ctrls,
 	.vidioc_querymenu = uvc_ioctl_querymenu,
 	.vidioc_g_selection = uvc_ioctl_g_selection,
-	.vidioc_g_parm = uvc_ioctl_g_parm,
-	.vidioc_s_parm = uvc_ioctl_s_parm,
 	.vidioc_enum_framesizes = uvc_ioctl_enum_framesizes,
 	.vidioc_enum_frameintervals = uvc_ioctl_enum_frameintervals,
 	.vidioc_subscribe_event = uvc_ioctl_subscribe_event,

---
base-commit: 72ad4ff638047bbbdf3232178fea4bec1f429319
change-id: 20241127-uvc-dup-cap-out-6a03c01e30a3

Best regards,
-- 
Ricardo Ribalda <ribalda@chromium.org>

Re: [PATCH v2] media: uvcvideo: Remove duplicated cap/out code

Posted by Hans de Goede 3 weeks, 3 days ago

Hi Ricardo,

On 29-Nov-24 8:28 PM, Ricardo Ribalda wrote:
> The *_vid_cap and *_vid_out helpers seem to be identical:
> - Remove all the cap/out duplicated code.
> - Remove s/g_parm helpers
> - Reorder uvc_ioctl_ops
> 
> And now that we are at it, fix a comment for uvc_acquire_privileges()
> 
> Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
> ---
> Unless I miss something, cap and out helpers are identical. So there is
> no need to duplicate code
> ---
> Changes in v2:
> - Add missing acquire_privileges.
> - Also remove helper for s/g_parm.
> - Reorder callbacks.
> - Link to v1: https://lore.kernel.org/r/20241127-uvc-dup-cap-out-v1-1-1bdcad2dabb0@chromium.org
> ---
>  drivers/media/usb/uvc/uvc_v4l2.c | 162 +++++++++++----------------------------
>  1 file changed, 43 insertions(+), 119 deletions(-)
> 
> diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c
> index 97c5407f6603..42f0f8a89865 100644
> --- a/drivers/media/usb/uvc/uvc_v4l2.c
> +++ b/drivers/media/usb/uvc/uvc_v4l2.c
> @@ -26,6 +26,8 @@
>  
>  #include "uvcvideo.h"
>  
> +static int uvc_acquire_privileges(struct uvc_fh *handle);
> +
>  static int uvc_control_add_xu_mapping(struct uvc_video_chain *chain,
>  				      struct uvc_control_mapping *map,
>  				      const struct uvc_xu_control_mapping *xmap)
> @@ -361,9 +363,11 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream,
>  	return ret;
>  }
>  
> -static int uvc_v4l2_get_format(struct uvc_streaming *stream,
> -	struct v4l2_format *fmt)
> +static int uvc_ioctl_g_fmt(struct file *file, void *fh,
> +			   struct v4l2_format *fmt)
>  {
> +	struct uvc_fh *handle = fh;
> +	struct uvc_streaming *stream = handle->stream;
>  	const struct uvc_format *format;
>  	const struct uvc_frame *frame;
>  	int ret = 0;
> @@ -395,14 +399,20 @@ static int uvc_v4l2_get_format(struct uvc_streaming *stream,
>  	return ret;
>  }
>  
> -static int uvc_v4l2_set_format(struct uvc_streaming *stream,
> -	struct v4l2_format *fmt)
> +static int uvc_ioctl_s_fmt(struct file *file, void *fh,
> +			   struct v4l2_format *fmt)
>  {
> +	struct uvc_fh *handle = fh;
> +	struct uvc_streaming *stream = handle->stream;
>  	struct uvc_streaming_control probe;
>  	const struct uvc_format *format;
>  	const struct uvc_frame *frame;
>  	int ret;
>  
> +	ret = uvc_acquire_privileges(handle);
> +	if (ret)
> +		return ret;
> +

The original code used "if (ret < 0)" here and so does this patch in
uvc_ioctl_s_parm() below.

Please change this to "if (ret < 0)" for consistency.

Otherwise this looks good to me:

Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Regards,

Hans



>  	if (fmt->type != stream->type)
>  		return -EINVAL;
>  
> @@ -426,10 +436,12 @@ static int uvc_v4l2_set_format(struct uvc_streaming *stream,
>  	return ret;
>  }
>  
> -static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream,
> -		struct v4l2_streamparm *parm)
> +static int uvc_ioctl_g_parm(struct file *file, void *fh,
> +			    struct v4l2_streamparm *parm)
>  {
>  	u32 numerator, denominator;
> +	struct uvc_fh *handle = fh;
> +	struct uvc_streaming *stream = handle->stream;
>  
>  	if (parm->type != stream->type)
>  		return -EINVAL;
> @@ -461,9 +473,11 @@ static int uvc_v4l2_get_streamparm(struct uvc_streaming *stream,
>  	return 0;
>  }
>  
> -static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
> -		struct v4l2_streamparm *parm)
> +static int uvc_ioctl_s_parm(struct file *file, void *fh,
> +			    struct v4l2_streamparm *parm)
>  {
> +	struct uvc_fh *handle = fh;
> +	struct uvc_streaming *stream = handle->stream;
>  	struct uvc_streaming_control probe;
>  	struct v4l2_fract timeperframe;
>  	const struct uvc_format *format;
> @@ -472,6 +486,10 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
>  	unsigned int i;
>  	int ret;
>  
> +	ret = uvc_acquire_privileges(handle);
> +	if (ret < 0)
> +		return ret;
> +
>  	if (parm->type != stream->type)
>  		return -EINVAL;
>  
> @@ -573,6 +591,7 @@ static int uvc_v4l2_set_streamparm(struct uvc_streaming *stream,
>   * - VIDIOC_S_INPUT
>   * - VIDIOC_S_PARM
>   * - VIDIOC_S_FMT
> + * - VIDIOC_CREATE_BUFS
>   * - VIDIOC_REQBUFS
>   */
>  static int uvc_acquire_privileges(struct uvc_fh *handle)
> @@ -685,11 +704,13 @@ static int uvc_ioctl_querycap(struct file *file, void *fh,
>  	return 0;
>  }
>  
> -static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream,
> +static int uvc_ioctl_enum_fmt(struct file *file, void *fh,
>  			      struct v4l2_fmtdesc *fmt)
>  {
> -	const struct uvc_format *format;
> +	struct uvc_fh *handle = fh;
> +	struct uvc_streaming *stream = handle->stream;
>  	enum v4l2_buf_type type = fmt->type;
> +	const struct uvc_format *format;
>  	u32 index = fmt->index;
>  
>  	if (fmt->type != stream->type || fmt->index >= stream->nformats)
> @@ -707,82 +728,8 @@ static int uvc_ioctl_enum_fmt(struct uvc_streaming *stream,
>  	return 0;
>  }
>  
> -static int uvc_ioctl_enum_fmt_vid_cap(struct file *file, void *fh,
> -				      struct v4l2_fmtdesc *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -
> -	return uvc_ioctl_enum_fmt(stream, fmt);
> -}
> -
> -static int uvc_ioctl_enum_fmt_vid_out(struct file *file, void *fh,
> -				      struct v4l2_fmtdesc *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -
> -	return uvc_ioctl_enum_fmt(stream, fmt);
> -}
> -
> -static int uvc_ioctl_g_fmt_vid_cap(struct file *file, void *fh,
> -				   struct v4l2_format *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -
> -	return uvc_v4l2_get_format(stream, fmt);
> -}
> -
> -static int uvc_ioctl_g_fmt_vid_out(struct file *file, void *fh,
> -				   struct v4l2_format *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -
> -	return uvc_v4l2_get_format(stream, fmt);
> -}
> -
> -static int uvc_ioctl_s_fmt_vid_cap(struct file *file, void *fh,
> -				   struct v4l2_format *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -	int ret;
> -
> -	ret = uvc_acquire_privileges(handle);
> -	if (ret < 0)
> -		return ret;
> -
> -	return uvc_v4l2_set_format(stream, fmt);
> -}
> -
> -static int uvc_ioctl_s_fmt_vid_out(struct file *file, void *fh,
> -				   struct v4l2_format *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -	int ret;
> -
> -	ret = uvc_acquire_privileges(handle);
> -	if (ret < 0)
> -		return ret;
> -
> -	return uvc_v4l2_set_format(stream, fmt);
> -}
> -
> -static int uvc_ioctl_try_fmt_vid_cap(struct file *file, void *fh,
> -				     struct v4l2_format *fmt)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -	struct uvc_streaming_control probe;
> -
> -	return uvc_v4l2_try_format(stream, fmt, &probe, NULL, NULL);
> -}
> -
> -static int uvc_ioctl_try_fmt_vid_out(struct file *file, void *fh,
> -				     struct v4l2_format *fmt)
> +static int uvc_ioctl_try_fmt(struct file *file, void *fh,
> +			     struct v4l2_format *fmt)
>  {
>  	struct uvc_fh *handle = fh;
>  	struct uvc_streaming *stream = handle->stream;
> @@ -1212,29 +1159,6 @@ static int uvc_ioctl_g_selection(struct file *file, void *fh,
>  	return 0;
>  }
>  
> -static int uvc_ioctl_g_parm(struct file *file, void *fh,
> -			    struct v4l2_streamparm *parm)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -
> -	return uvc_v4l2_get_streamparm(stream, parm);
> -}
> -
> -static int uvc_ioctl_s_parm(struct file *file, void *fh,
> -			    struct v4l2_streamparm *parm)
> -{
> -	struct uvc_fh *handle = fh;
> -	struct uvc_streaming *stream = handle->stream;
> -	int ret;
> -
> -	ret = uvc_acquire_privileges(handle);
> -	if (ret < 0)
> -		return ret;
> -
> -	return uvc_v4l2_set_streamparm(stream, parm);
> -}
> -
>  static int uvc_ioctl_enum_framesizes(struct file *file, void *fh,
>  				     struct v4l2_frmsizeenum *fsize)
>  {
> @@ -1543,15 +1467,17 @@ static unsigned long uvc_v4l2_get_unmapped_area(struct file *file,
>  #endif
>  
>  const struct v4l2_ioctl_ops uvc_ioctl_ops = {
> +	.vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt,
> +	.vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt,
> +	.vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt,
> +	.vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt,
> +	.vidioc_g_parm = uvc_ioctl_g_parm,
> +	.vidioc_s_parm = uvc_ioctl_s_parm,
>  	.vidioc_querycap = uvc_ioctl_querycap,
> -	.vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt_vid_cap,
> -	.vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt_vid_out,
> -	.vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt_vid_cap,
> -	.vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt_vid_out,
> -	.vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt_vid_cap,
> -	.vidioc_s_fmt_vid_out = uvc_ioctl_s_fmt_vid_out,
> -	.vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt_vid_cap,
> -	.vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt_vid_out,
> +	.vidioc_enum_fmt_vid_cap = uvc_ioctl_enum_fmt,
> +	.vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt,
> +	.vidioc_try_fmt_vid_cap = uvc_ioctl_try_fmt,
> +	.vidioc_try_fmt_vid_out = uvc_ioctl_try_fmt,
>  	.vidioc_reqbufs = uvc_ioctl_reqbufs,
>  	.vidioc_querybuf = uvc_ioctl_querybuf,
>  	.vidioc_qbuf = uvc_ioctl_qbuf,
> @@ -1570,8 +1496,6 @@ const struct v4l2_ioctl_ops uvc_ioctl_ops = {
>  	.vidioc_try_ext_ctrls = uvc_ioctl_try_ext_ctrls,
>  	.vidioc_querymenu = uvc_ioctl_querymenu,
>  	.vidioc_g_selection = uvc_ioctl_g_selection,
> -	.vidioc_g_parm = uvc_ioctl_g_parm,
> -	.vidioc_s_parm = uvc_ioctl_s_parm,
>  	.vidioc_enum_framesizes = uvc_ioctl_enum_framesizes,
>  	.vidioc_enum_frameintervals = uvc_ioctl_enum_frameintervals,
>  	.vidioc_subscribe_event = uvc_ioctl_subscribe_event,
> 
> ---
> base-commit: 72ad4ff638047bbbdf3232178fea4bec1f429319
> change-id: 20241127-uvc-dup-cap-out-6a03c01e30a3
> 
> Best regards,