[PATCH] media: i2c: alvium-csi2: balance runtime PM usage count on remove

[Guangshuo Li]

alvium_probe() increments the runtime PM usage count with
pm_runtime_get_noresume() before enabling runtime PM. The probe error
path correctly balances this reference with pm_runtime_put_noidle(),
but the normal remove path only disables runtime PM.

pm_runtime_disable() does not decrement the usage count, so a
successful probe followed by driver removal leaves the runtime PM
usage count unbalanced.

Add the missing pm_runtime_put_noidle() to the remove path, matching
the existing probe error cleanup.

This issue was found by manual code inspection.

Fixes: 0a7af872915e ("media: i2c: Add support for alvium camera")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Guangshuo Li <lgs201920130244@xxxxxxxxx>
---
 drivers/media/i2c/alvium-csi2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/i2c/alvium-csi2.c b/drivers/media/i2c/alvium-csi2.c
index f51f9b987759..f218999e0ed9 100644
--- a/drivers/media/i2c/alvium-csi2.c
+++ b/drivers/media/i2c/alvium-csi2.c
@@ -2523,6 +2523,7 @@ static void alvium_remove(struct i2c_client *client)
 	 * make sure to turn power off manually.
 	 */
 	pm_runtime_disable(dev);
+	pm_runtime_put_noidle(dev);
 	if (!pm_runtime_status_suspended(dev))
 		alvium_set_power(alvium, false);
 	pm_runtime_set_suspended(dev);
-- 
2.43.0