From: Qinglang Miao <[email protected]>
[ Upstream commit de4248b744e8394f239c0dd0af34088399d27d94 ]
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to putting operation will result in a
reference leak here.
A new function pm_runtime_resume_and_get is introduced in
[0] to keep usage counter balanced. So We fix the reference
leak by replacing it with new function.
[0] commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal
with usage counter")
Fixes: 50de2e9ebbc0 ("drm/lima: enable runtime pm")
Reported-by: Hulk Robot <[email protected]>
Signed-off-by: Qinglang Miao <[email protected]>
Signed-off-by: Qiang Yu <[email protected]>
Link:
https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit de499781c97d96703af8a32d2b5e37fdb5b51568)
Signed-off-by: Maarten Lankhorst <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
drivers/gpu/drm/lima/lima_sched.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/lima/lima_sched.c
b/drivers/gpu/drm/lima/lima_sched.c
index 63b4c5643f9cd..5cc20b403a252 100644
--- a/drivers/gpu/drm/lima/lima_sched.c
+++ b/drivers/gpu/drm/lima/lima_sched.c
@@ -201,7 +201,7 @@ static int lima_pm_busy(struct lima_device *ldev)
int ret;
/* resume GPU if it has been suspended by runtime PM */
- ret = pm_runtime_get_sync(ldev->dev);
+ ret = pm_runtime_resume_and_get(ldev->dev);
if (ret < 0)
return ret;
--
2.27.0
