[1/2] vb2: vb2_poll() fix return values for file I/O mode
Commit Message
poll() should be returning poll-specific error values, not E* errors.
Signed-off-by: Pawel Osciak <pawel@osciak.com>
---
drivers/media/video/videobuf2-core.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
Comments
Hello,
On Monday, March 21, 2011 12:31 AM Pawel Osciak wrote:
> poll() should be returning poll-specific error values, not E* errors.
>
> Signed-off-by: Pawel Osciak <pawel@osciak.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
> drivers/media/video/videobuf2-core.c | 6 +++---
> 1 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/video/videobuf2-core.c b/drivers/media/video/videobuf2-core.c
> index ce03225..8c6f04b 100644
> --- a/drivers/media/video/videobuf2-core.c
> +++ b/drivers/media/video/videobuf2-core.c
> @@ -1364,18 +1364,18 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
> struct vb2_buffer *vb = NULL;
>
> /*
> - * Start file io emulator if streaming api has not been used yet.
> + * Start file I/O emulator only if streaming API has not been used yet.
> */
> if (q->num_buffers == 0 && q->fileio == NULL) {
> if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ)) {
> ret = __vb2_init_fileio(q, 1);
> if (ret)
> - return ret;
> + return POLLERR;
> }
> if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE)) {
> ret = __vb2_init_fileio(q, 0);
> if (ret)
> - return ret;
> + return POLLERR;
> /*
> * Write to OUTPUT queue can be done immediately.
> */
> --
> 1.7.4.1
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
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@@ -1364,18 +1364,18 @@ unsigned int vb2_poll(struct vb2_queue *q, struct file *file, poll_table *wait)
struct vb2_buffer *vb = NULL;
/*
- * Start file io emulator if streaming api has not been used yet.
+ * Start file I/O emulator only if streaming API has not been used yet.
*/
if (q->num_buffers == 0 && q->fileio == NULL) {
if (!V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_READ)) {
ret = __vb2_init_fileio(q, 1);
if (ret)
- return ret;
+ return POLLERR;
}
if (V4L2_TYPE_IS_OUTPUT(q->type) && (q->io_modes & VB2_WRITE)) {
ret = __vb2_init_fileio(q, 0);
if (ret)
- return ret;
+ return POLLERR;
/*
* Write to OUTPUT queue can be done immediately.
*/