media: rcar-vin: Add check for completed capture before completing buffer

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Before reading which slot was captured to by examining the module status
(VnMS) register, make sure something was captured at all by examining
the interrupt status register (VnINTS).

Failing this a buffer maybe completed before it was captured too.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

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Niklas Söderlund 2021-11-23 16:54:43 +01:00 • committed by Mauro Carvalho Chehab

parent 8f852ab8c3

commit 30334d3d99

1 changed files with 7 additions and 0 deletions

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drivers/media/platform/rcar-vin/rcar-dma.c

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