[PATCH] drm/rockchip: Fix runtime PM imbalance on error

[Yongzhi Liu]

pm_runtime_get_sync() will increase the rumtime PM counter
even it returns an error. Thus a pairing decrement is needed
to prevent refcount leak. Fix this by replacing this API with
pm_runtime_resume_and_get(), which will not change the runtime
PM counter on error.

Signed-off-by: Yongzhi Liu <lyz_cs at pku.edu.cn>
---
 drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 4ed7a68..9cf53f0 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -1188,7 +1188,7 @@ static int dw_mipi_dsi_dphy_power_on(struct phy *phy)
 		return i;
 	}
 
-	ret = pm_runtime_get_sync(dsi->dev);
+	ret = pm_runtime_resume_and_get(dsi->dev);
 	if (ret < 0) {
 		DRM_DEV_ERROR(dsi->dev, "failed to enable device: %d\n", ret);
 		return ret;
-- 
2.7.4