"vpu_core->msg_buffer_size" is unused out-side of vpu_core_register().
There is no need to save this value in struct vpu_core.

Remove it and use a local variable instead.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/media/platform/amphion/vpu.h      | 1 -
 drivers/media/platform/amphion/vpu_core.c | 7 ++++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/amphion/vpu.h b/drivers/media/platform/amphion/vpu.h
index 22f0da26ccec..1451549c9dd2 100644
--- a/drivers/media/platform/amphion/vpu.h
+++ b/drivers/media/platform/amphion/vpu.h
@@ -162,7 +162,6 @@ struct vpu_core {
 	struct delayed_work msg_delayed_work;
 	struct kfifo msg_fifo;
 	void *msg_buffer;
-	unsigned int msg_buffer_size;
 
 	struct vpu_dev *vpu;
 	void *iface;
diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c
index 8df85c14ab3f..da00f5fc0e5d 100644
--- a/drivers/media/platform/amphion/vpu_core.c
+++ b/drivers/media/platform/amphion/vpu_core.c
@@ -250,6 +250,7 @@ static void vpu_core_get_vpu(struct vpu_core *core)
 static int vpu_core_register(struct device *dev, struct vpu_core *core)
 {
 	struct vpu_dev *vpu = dev_get_drvdata(dev);
+	unsigned int buffer_size;
 	int ret = 0;
 
 	dev_dbg(core->dev, "register core %s\n", vpu_core_type_desc(core->type));
@@ -263,14 +264,14 @@ static int vpu_core_register(struct device *dev, struct vpu_core *core)
 	}
 	INIT_WORK(&core->msg_work, vpu_msg_run_work);
 	INIT_DELAYED_WORK(&core->msg_delayed_work, vpu_msg_delayed_work);
-	core->msg_buffer_size = roundup_pow_of_two(VPU_MSG_BUFFER_SIZE);
-	core->msg_buffer = vzalloc(core->msg_buffer_size);
+	buffer_size = roundup_pow_of_two(VPU_MSG_BUFFER_SIZE);
+	core->msg_buffer = vzalloc(buffer_size);
 	if (!core->msg_buffer) {
 		dev_err(core->dev, "failed allocate buffer for fifo\n");
 		ret = -ENOMEM;
 		goto error;
 	}
-	ret = kfifo_init(&core->msg_fifo, core->msg_buffer, core->msg_buffer_size);
+	ret = kfifo_init(&core->msg_fifo, core->msg_buffer, buffer_size);
 	if (ret) {
 		dev_err(core->dev, "failed init kfifo\n");
 		goto error;
-- 
2.49.0

Le vendredi 18 avril 2025 à 00:01 +0200, Christophe JAILLET a écrit :
> "vpu_core->msg_buffer_size" is unused out-side of vpu_core_register().
> There is no need to save this value in struct vpu_core.
> 
> Remove it and use a local variable instead.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>

thanks,
Nicolas

> ---
>  drivers/media/platform/amphion/vpu.h      | 1 -
>  drivers/media/platform/amphion/vpu_core.c | 7 ++++---
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/amphion/vpu.h b/drivers/media/platform/amphion/vpu.h
> index 22f0da26ccec..1451549c9dd2 100644
> --- a/drivers/media/platform/amphion/vpu.h
> +++ b/drivers/media/platform/amphion/vpu.h
> @@ -162,7 +162,6 @@ struct vpu_core {
>  	struct delayed_work msg_delayed_work;
>  	struct kfifo msg_fifo;
>  	void *msg_buffer;
> -	unsigned int msg_buffer_size;
>  
>  	struct vpu_dev *vpu;
>  	void *iface;
> diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c
> index 8df85c14ab3f..da00f5fc0e5d 100644
> --- a/drivers/media/platform/amphion/vpu_core.c
> +++ b/drivers/media/platform/amphion/vpu_core.c
> @@ -250,6 +250,7 @@ static void vpu_core_get_vpu(struct vpu_core *core)
>  static int vpu_core_register(struct device *dev, struct vpu_core *core)
>  {
>  	struct vpu_dev *vpu = dev_get_drvdata(dev);
> +	unsigned int buffer_size;
>  	int ret = 0;
>  
>  	dev_dbg(core->dev, "register core %s\n", vpu_core_type_desc(core->type));
> @@ -263,14 +264,14 @@ static int vpu_core_register(struct device *dev, struct vpu_core *core)
>  	}
>  	INIT_WORK(&core->msg_work, vpu_msg_run_work);
>  	INIT_DELAYED_WORK(&core->msg_delayed_work, vpu_msg_delayed_work);
> -	core->msg_buffer_size = roundup_pow_of_two(VPU_MSG_BUFFER_SIZE);
> -	core->msg_buffer = vzalloc(core->msg_buffer_size);
> +	buffer_size = roundup_pow_of_two(VPU_MSG_BUFFER_SIZE);
> +	core->msg_buffer = vzalloc(buffer_size);
>  	if (!core->msg_buffer) {
>  		dev_err(core->dev, "failed allocate buffer for fifo\n");
>  		ret = -ENOMEM;
>  		goto error;
>  	}
> -	ret = kfifo_init(&core->msg_fifo, core->msg_buffer, core->msg_buffer_size);
> +	ret = kfifo_init(&core->msg_fifo, core->msg_buffer, buffer_size);
>  	if (ret) {
>  		dev_err(core->dev, "failed init kfifo\n");
>  		goto error;