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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2015-07-03 10:37:07 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-07-17 15:00:12 +0300 |
| commit | 6d058c5643e16779ae4c001d2e893c140940e48f (patch) | |
| tree | 185e7fa3385661a9d93860732def4ad6f4886daa /drivers/media/pci | |
| parent | 5bab86243d949cf021b0f104faafc18f5d20283c (diff) | |
| download | linux-6d058c5643e16779ae4c001d2e893c140940e48f.tar.xz | |
[media] vb2: Only requeue buffers immediately once streaming is started
Buffers can be returned back to videobuf2 in driver's streamon handler. In
this case vb2_buffer_done() with buffer state VB2_BUF_STATE_QUEUED will
cause the driver's buf_queue vb2 operation to be called, queueing the same
buffer again only to be returned to videobuf2 using vb2_buffer_done() and so
on.
Add a new buffer state VB2_BUF_STATE_REQUEUEING which, when used as the
state argument to vb2_buffer_done(), will result in buffers queued to the
driver. Using VB2_BUF_STATE_QUEUED will leave the buffer to videobuf2, as it
was before "[media] vb2: allow requeuing buffers while streaming".
Fixes: ce0eff016f72 ("[media] vb2: allow requeuing buffers while streaming")
[mchehab@osg.samsung.com: fix warning: enumeration value 'VB2_BUF_STATE_REQUEUEING' not handled in switch]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org # for v4.1
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/pci')
| -rw-r--r-- | drivers/media/pci/cobalt/cobalt-irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/pci/cobalt/cobalt-irq.c b/drivers/media/pci/cobalt/cobalt-irq.c index dd4bff9cf339..d1f5898d11ba 100644 --- a/drivers/media/pci/cobalt/cobalt-irq.c +++ b/drivers/media/pci/cobalt/cobalt-irq.c @@ -139,7 +139,7 @@ done: also know about dropped frames. */ cb->vb.v4l2_buf.sequence = s->sequence++; vb2_buffer_done(&cb->vb, (skip || s->unstable_frame) ? - VB2_BUF_STATE_QUEUED : VB2_BUF_STATE_DONE); + VB2_BUF_STATE_REQUEUEING : VB2_BUF_STATE_DONE); } irqreturn_t cobalt_irq_handler(int irq, void *dev_id) |