Hi Prabhakar,
I think this introduces a memory leak, see my comments below.
On Wed 3 October 2012 15:42:29 Prabhakar wrote:
> From: Lad, Prabhakar <prabhakar.lad@xxxxxx>
>
> from commit with id 896f38f582730a19eb49677105b4fe4c0270b82e
> it's mandatory to check the return code of vb2_queue_init().
>
> Signed-off-by: Lad, Prabhakar <prabhakar.lad@xxxxxx>
> Signed-off-by: Manjunath Hadli <manjunath.hadli@xxxxxx>
> Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx>
> ---
> drivers/media/platform/davinci/vpif_capture.c | 8 ++++++--
> drivers/media/platform/davinci/vpif_display.c | 8 ++++++--
> 2 files changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
> index 83b80ba..3521725 100644
> --- a/drivers/media/platform/davinci/vpif_capture.c
> +++ b/drivers/media/platform/davinci/vpif_capture.c
> @@ -976,6 +976,7 @@ static int vpif_reqbufs(struct file *file, void *priv,
> struct common_obj *common;
> u8 index = 0;
> struct vb2_queue *q;
> + int ret;
>
> vpif_dbg(2, debug, "vpif_reqbufs\n");
>
> @@ -1015,8 +1016,11 @@ static int vpif_reqbufs(struct file *file, void *priv,
> q->mem_ops = &vb2_dma_contig_memops;
> q->buf_struct_size = sizeof(struct vpif_cap_buffer);
>
> - vb2_queue_init(q);
> -
> + ret = vb2_queue_init(q);
> + if (ret) {
> + vpif_err("vpif_capture: vb2_queue_init() failed\n");
I think you need to call vb2_dma_contig_cleanup_ctx(common->alloc_ctx); here
to prevent a memory leak.
> + return ret;
> + }
> /* Set io allowed member of file handle to TRUE */
> fh->io_allowed[index] = 1;
> /* Increment io usrs member of channel object to 1 */
> diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
> index ae8329d..84cee9d 100644
> --- a/drivers/media/platform/davinci/vpif_display.c
> +++ b/drivers/media/platform/davinci/vpif_display.c
> @@ -936,6 +936,7 @@ static int vpif_reqbufs(struct file *file, void *priv,
> enum v4l2_field field;
> struct vb2_queue *q;
> u8 index = 0;
> + int ret;
>
> /* This file handle has not initialized the channel,
> It is not allowed to do settings */
> @@ -981,8 +982,11 @@ static int vpif_reqbufs(struct file *file, void *priv,
> q->mem_ops = &vb2_dma_contig_memops;
> q->buf_struct_size = sizeof(struct vpif_disp_buffer);
>
> - vb2_queue_init(q);
> -
> + ret = vb2_queue_init(q);
> + if (ret) {
> + vpif_err("vpif_display: vb2_queue_init() failed\n");
Ditto.
> + return ret;
> + }
> /* Set io allowed member of file handle to TRUE */
> fh->io_allowed[index] = 1;
> /* Increment io usrs member of channel object to 1 */
>
Regards,
Hans
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