Messages in this thread Patch in this message | | | From | Qinglang Miao <> | Subject | [PATCH 1/3] drm/rockchip: cdn-dp: fix reference leak when pm_runtime_get_sync fails | Date | Tue, 1 Dec 2020 20:54:57 +0800 |
| |
The PM reference count is not expected to be incremented on return in cdn_dp_clk_enable.
However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here.
Replace it with pm_runtime_resume_and_get to keep usage counter balanced.
Fixes: efe0220fc2d2 ("drm/rockchip: cdn-dp: Fix error handling") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index a4a45daf9..9b4406191 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -98,7 +98,7 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp) goto err_core_clk; } - ret = pm_runtime_get_sync(dp->dev); + ret = pm_runtime_resume_and_get(dp->dev); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "cannot get pm runtime %d\n", ret); goto err_pm_runtime_get; -- 2.23.0
| |