media: samsung: exynos4-is: fix potential ABBA deadlock on init

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commit 17dc8ccd6d upstream.

v4l2_device_register_subdev_nodes() must called without taking
media_dev->graph_mutex to avoid potential AB-BA deadlock on further
subdevice driver initialization.

Fixes: fa91f1056f ("[media] exynos4-is: Add support for asynchronous subdevices registration")
Cc: stable@vger.kernel.org
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Marek Szyprowski 2025-10-14 12:46:43 +02:00 • committed by Greg Kroah-Hartman

parent 2844c564a0

commit d2f8e900e6

1 changed files with 6 additions and 4 deletions

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drivers/media/platform/samsung/exynos4-is/media-dev.c

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