From 0cb5c9607f1642e0c29d1cff72fef6ed9a8efe9c Mon Sep 17 00:00:00 2001 From: Qiushi Wu Date: Sun, 14 Jun 2020 04:56:05 +0200 Subject: [PATCH] media: ti-vpe: Fix a missing check and reference count leak [ Upstream commit 7dae2aaaf432767ca7aa11fa84643a7c2600dbdd ] pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code, causing incorrect ref count if pm_runtime_put_noidle() is not called in error handling paths. And also, when the call of function vpe_runtime_get() failed, we won't call vpe_runtime_put(). Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails inside vpe_runtime_get(). Fixes: 4571912743ac ("[media] v4l: ti-vpe: Add VPE mem to mem driver") Signed-off-by: Qiushi Wu Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/ti-vpe/vpe.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c index 2e8970c7e22d..bbd8bb611915 100644 --- a/drivers/media/platform/ti-vpe/vpe.c +++ b/drivers/media/platform/ti-vpe/vpe.c @@ -2470,6 +2470,8 @@ static int vpe_runtime_get(struct platform_device *pdev) r = pm_runtime_get_sync(&pdev->dev); WARN_ON(r < 0); + if (r) + pm_runtime_put_noidle(&pdev->dev); return r < 0 ? r : 0; } -- 2.20.1