diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2014-04-17 09:47:21 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-04-23 17:12:51 +0400 |
| commit | e37559b22c63b557d242bfa1a07ab1b8f7d5d9f1 (patch) | |
| tree | c74ed6e62e384350c04c35bfdc7fdf34c82fcdb3 /drivers/media/platform/exynos4-is/fimc-m2m.c | |
| parent | ac9687a2e6abd7d87af413d1a8eb78f947921464 (diff) | |
| download | linux-e37559b22c63b557d242bfa1a07ab1b8f7d5d9f1.tar.xz | |
[media] vb2: stop_streaming should return void
The vb2 core ignores any return code from the stop_streaming op.
And there really isn't anything it can do anyway in case of an error.
So change the return type to void and update any drivers that implement it.
The int return gave drivers the idea that this operation could actually
fail, but that's really not the case.
The pwc amd sdr-msi3101 drivers both had this construction:
if (mutex_lock_interruptible(&s->v4l2_lock))
return -ERESTARTSYS;
This has been updated to just call mutex_lock(). The stop_streaming op
expects this to really stop streaming and I very much doubt this will
work reliably if stop_streaming just returns without really stopping the
DMA.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/platform/exynos4-is/fimc-m2m.c')
| -rw-r--r-- | drivers/media/platform/exynos4-is/fimc-m2m.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c index 36971d915b53..d314155da9e4 100644 --- a/drivers/media/platform/exynos4-is/fimc-m2m.c +++ b/drivers/media/platform/exynos4-is/fimc-m2m.c @@ -85,7 +85,7 @@ static int start_streaming(struct vb2_queue *q, unsigned int count) return ret > 0 ? 0 : ret; } -static int stop_streaming(struct vb2_queue *q) +static void stop_streaming(struct vb2_queue *q) { struct fimc_ctx *ctx = q->drv_priv; int ret; @@ -95,7 +95,6 @@ static int stop_streaming(struct vb2_queue *q) fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); pm_runtime_put(&ctx->fimc_dev->pdev->dev); - return 0; } static void fimc_device_run(void *priv) |