Thread (3 messages) 3 messages, 2 authors, 2021-05-17
STALE1855d

[PATCH] media: hantro: Fix PM reference leak in device_run()

From: Yu Kuai <hidden>
Date: 2021-05-17 08:08:05
Also in: linux-media, linux-rockchip, lkml
Subsystem: media input infrastructure (v4l/dvb), staging subsystem, the rest · Maintainers: Mauro Carvalho Chehab, Greg Kroah-Hartman, Linus Torvalds

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Reported-by: Hulk Robot <redacted>
Signed-off-by: Yu Kuai <redacted>
---
 drivers/staging/media/hantro/hantro_drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
index eea2009fa17b..7a6d3ef22096 100644
--- a/drivers/staging/media/hantro/hantro_drv.c
+++ b/drivers/staging/media/hantro/hantro_drv.c
@@ -160,7 +160,7 @@ static void device_run(void *priv)
 	src = hantro_get_src_buf(ctx);
 	dst = hantro_get_dst_buf(ctx);
 
-	ret = pm_runtime_get_sync(ctx->dev->dev);
+	ret = pm_runtime_resume_and_get(ctx->dev->dev);
 	if (ret < 0) {
 		pm_runtime_put_noidle(ctx->dev->dev);
 		goto err_cancel_job;
-- 
2.25.4
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