[PATCH 2/2] staging: media: ipu7: fix pm_runtime refcount leak in ipu7_resume()

[Vidhu Sarwal]

ipu7_resume() calls pm_runtime_get_sync() before resuming the device.
If the runtime PM resume fails, the usage count remains incremented, but
the error path returns without dropping the reference.

Use pm_runtime_resume_and_get() instead, which balances the usage count
on failure and avoids the leak. Keep returning 0 on error, as resume
callbacks should not propagate failures to the PM core, matching the
behaviour of the ipu6 driver.

Fixes: b7fe4c0019b1 ("media: staging/ipu7: add Intel IPU7 PCI device driver")
Signed-off-by: Vidhu Sarwal <vidhu.linux@xxxxxxxxx>
---
 drivers/staging/media/ipu7/ipu7.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/ipu7/ipu7.c b/drivers/staging/media/ipu7/ipu7.c
index 056af3a07507..48a35bda4237 100644
--- a/drivers/staging/media/ipu7/ipu7.c
+++ b/drivers/staging/media/ipu7/ipu7.c
@@ -2702,7 +2702,7 @@ static int ipu7_resume(struct device *dev)
 	if (ret)
 		dev_err(dev, "IPC reset protocol failed!\n");
 
-	ret = pm_runtime_get_sync(&isp->psys->auxdev.dev);
+	ret = pm_runtime_resume_and_get(&isp->psys->auxdev.dev);
 	if (ret < 0) {
 		dev_err(dev, "Failed to get runtime PM\n");
 		return 0;
-- 
2.53.0