[PATCH] drm: renesas: shmobile: shmo_drm_crtc: Fix PM imbalance if RPM_ACTIVE is true

[Biju Das]

The pm_runtime_resume_and_get() returns 1 if RPM is active, in this
case it won't call a put. This will result in PM imbalance as it
treat this as an error and propagate this to caller and the caller
never calls corresponding put(). Fix this issue by checking error
condition only.

Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
---
 drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
index 2e2f37b9d0a4..42a5d6876bec 100644
--- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
+++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
@@ -208,7 +208,7 @@ static void shmob_drm_crtc_atomic_enable(struct drm_crtc *crtc,
 	int ret;
 
 	ret = pm_runtime_resume_and_get(dev);
-	if (ret)
+	if (ret < 0)
 		return;
 
 	/* Reset and enable the LCDC. */
-- 
2.43.0