[media] vb2: Improve file I/O emulation to handle buffers in any order

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videobuf2 file I/O emulation assumed that buffers dequeued from the
driver would return in the order they were enqueued in the driver.

Improve the file I/O emulator's book-keeping to remove this assumption.

Also set the buf->size properly if a write() dequeues a buffer and the
VB2_FILEIO_WRITE_IMMEDIATELY flag is set.

Based on an initial patch by Andy Walls.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

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Hans Verkuil 2013-12-13 13:13:45 -03:00 • committed by Mauro Carvalho Chehab

parent 79aeb3f308

commit 88e268702b

1 changed files with 14 additions and 14 deletions

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drivers/media/v4l2-core/videobuf2-core.c

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