[PATCH] drm/vc4: vec: Use pm_runtime_resume_and_get() in vc4_vec_encoder_enable()

[Shang XiaoJing]

Commit f0601ef8631c ("drm/vc4: vec: Protect device resources after
removal") add fail path for vc4_vec_encoder_enable(), and will put
usage_counter only when pm_runtime_get_sync() succeeds. However,
pm_runtime_get_sync() will increment usage_counter even it failed. Fix
it by replacing it with pm_runtime_resume_and_get() to keep usage
counter balanced.

Fixes: e4b81f8c74c8 ("drm/vc4: Add support for the VEC (Video Encoder) IP")
Signed-off-by: Shang XiaoJing <shangxiaojing at huawei.com>
---
 drivers/gpu/drm/vc4/vc4_vec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_vec.c b/drivers/gpu/drm/vc4/vc4_vec.c
index 0b3333865702..f4e044ba09d4 100644
--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -367,7 +367,7 @@ static void vc4_vec_encoder_enable(struct drm_encoder *encoder,
 	if (!drm_dev_enter(drm, &idx))
 		return;
 
-	ret = pm_runtime_get_sync(&vec->pdev->dev);
+	ret = pm_runtime_resume_and_get(&vec->pdev->dev);
 	if (ret < 0) {
 		DRM_ERROR("Failed to retain power domain: %d\n", ret);
 		goto err_dev_exit;
-- 
2.17.1