media: hi846: fix usage of pm_runtime_get_if_in_use()

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[ Upstream commit 04fc06f6dc ]

pm_runtime_get_if_in_use() does not only return nonzero values when
the device is in use, it can return a negative errno too.

And especially during resuming from system suspend, when runtime pm
is not yet up again, -EAGAIN is being returned, so the subsequent
pm_runtime_put() call results in a refcount underflow.

Fix system-resume by handling -EAGAIN of pm_runtime_get_if_in_use().

Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Fixes: e8c0882685 ("media: i2c: add driver for the SK Hynix Hi-846 8M pixel camera")
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Martin Kepplinger 2023-04-25 11:47:47 +02:00 • committed by Greg Kroah-Hartman

parent 1ac45cab77

commit 42ec6269f9

1 changed files with 2 additions and 1 deletions

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drivers/media/i2c/hi846.c

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