media: ti-vpe: cal: Restrict DMA to avoid memory corruption

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When setting DMA for video capture from CSI channel, if the DMA size
is not given, it ends up writing as much data as sent by the camera.

This may lead to overwriting the buffers causing memory corruption.
Observed green lines on the default framebuffer.

Restrict the DMA to maximum height as specified in the S_FMT ioctl.

Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

...

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Nikhil Devshatwar 2019-11-12 15:53:33 +01:00 • committed by Mauro Carvalho Chehab

parent 23122c373e

commit 6e72eab2e7

1 changed files with 4 additions and 2 deletions

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drivers/media/platform/ti-vpe/cal.c

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