diff options
| author | Martin Kepplinger | 2023-04-25 11:47:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-07-19 16:21:51 +0200 |
| commit | 42ec6269f98edd915ee37da3c6456bb6243ea56a (patch) | |
| tree | 7383e8597dc2a9c834915aca893e445bb2efbdcb /drivers/media/i2c | |
| parent | 1ac45cab77d68664001d6ab1932dbcf695b31e0d (diff) | |
media: hi846: fix usage of pm_runtime_get_if_in_use()
[ Upstream commit 04fc06f6dc1592ed5d675311ac50d8fba5db62ab ]
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: e8c0882685f9 ("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>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/hi846.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/i2c/hi846.c b/drivers/media/i2c/hi846.c index 306dc35e925f..f8709cdf28b3 100644 --- a/drivers/media/i2c/hi846.c +++ b/drivers/media/i2c/hi846.c @@ -1353,7 +1353,8 @@ static int hi846_set_ctrl(struct v4l2_ctrl *ctrl) exposure_max); } - if (!pm_runtime_get_if_in_use(&client->dev)) + ret = pm_runtime_get_if_in_use(&client->dev); + if (!ret || ret == -EAGAIN) return 0; switch (ctrl->id) { |