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[-next,media] media: davinci: vpbe: fix return value check in vpbe_display_reqbufs()

Message ID CAPgLHd-T7M8uuKd3cP31PHM-DfYcPXF_sV3uTQTENqctK6qzfg@mail.gmail.com (mailing list archive)
State Not Applicable
Headers show

Commit Message

Wei Yongjun Dec. 2, 2012, 10:18 a.m. UTC
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

In case of error, the function vb2_dma_contig_init_ctx() returns
ERR_PTR() and never returns NULL. The NULL test in the return value
check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/media/platform/davinci/vpbe_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Lad, Prabhakar Dec. 3, 2012, 6:02 a.m. UTC | #1
Hi,

On Sun, Dec 2, 2012 at 3:48 PM, Wei Yongjun <weiyj.lk@gmail.com> wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
>
> In case of error, the function vb2_dma_contig_init_ctx() returns
> ERR_PTR() and never returns NULL. The NULL test in the return value
> check should be replaced with IS_ERR().
>
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Acked-by: Prabhakar Lad <prabhakar.lad@ti.com>

Regards,
--Prabhakar

> ---
>  drivers/media/platform/davinci/vpbe_display.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c
> index 2bfde79..e181a52 100644
> --- a/drivers/media/platform/davinci/vpbe_display.c
> +++ b/drivers/media/platform/davinci/vpbe_display.c
> @@ -1393,9 +1393,9 @@ static int vpbe_display_reqbufs(struct file *file, void *priv,
>         }
>         /* Initialize videobuf queue as per the buffer type */
>         layer->alloc_ctx = vb2_dma_contig_init_ctx(vpbe_dev->pdev);
> -       if (!layer->alloc_ctx) {
> +       if (IS_ERR(layer->alloc_ctx)) {
>                 v4l2_err(&vpbe_dev->v4l2_dev, "Failed to get the context\n");
> -               return -EINVAL;
> +               return PTR_ERR(layer->alloc_ctx);
>         }
>         q = &layer->buffer_queue;
>         memset(q, 0, sizeof(*q));
>
> _______________________________________________
> Davinci-linux-open-source mailing list
> Davinci-linux-open-source@linux.davincidsp.com
> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
diff mbox

Patch

diff --git a/drivers/media/platform/davinci/vpbe_display.c b/drivers/media/platform/davinci/vpbe_display.c
index 2bfde79..e181a52 100644
--- a/drivers/media/platform/davinci/vpbe_display.c
+++ b/drivers/media/platform/davinci/vpbe_display.c
@@ -1393,9 +1393,9 @@  static int vpbe_display_reqbufs(struct file *file, void *priv,
 	}
 	/* Initialize videobuf queue as per the buffer type */
 	layer->alloc_ctx = vb2_dma_contig_init_ctx(vpbe_dev->pdev);
-	if (!layer->alloc_ctx) {
+	if (IS_ERR(layer->alloc_ctx)) {
 		v4l2_err(&vpbe_dev->v4l2_dev, "Failed to get the context\n");
-		return -EINVAL;
+		return PTR_ERR(layer->alloc_ctx);
 	}
 	q = &layer->buffer_queue;
 	memset(q, 0, sizeof(*q));