media: v4l: subdev: Make link validation safer

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Link validation currently accesses invalid pointers if the link passed to
it is not between two sub-devices. This is of course a driver bug.

Ignore the error but print a warning message, as this is how it used to
work previously.

Fixes: a6b995ed03 ("media: subdev: use streams in v4l2_subdev_link_validate()")
Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

...

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Sakari Ailus 2023-02-24 16:00:46 +01:00 • committed by Mauro Carvalho Chehab

parent 530779157c

commit 55f1ecb119

1 changed files with 10 additions and 0 deletions

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

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