media: imx: Unregister csc/scaler only if registered

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[ Upstream commit bb2216548a ]

The csc/scaler device pointer (imxmd->m2m_vdev) is assigned
after the imx media device v4l2-async probe completes,
therefore we need to check if the device is non-NULL
before trying to unregister it.

This can be the case if the non-completed imx media device
is unbinded (or the driver is removed), leading to a kernel oops.

Fixes: a8ef0488cc ("media: imx: add csc/scaler mem2mem device")
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Ezequiel Garcia 2021-01-04 21:34:39 +01:00 • committed by Greg Kroah-Hartman

parent 9056dd5417

commit fe2e6f9342

1 changed files with 6 additions and 1 deletions

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drivers/staging/media/imx/imx-media-dev.c

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