[PATCH] drm: renesas: rcar-du: rcar_lvds: Fix PM imbalance if RPM_ACTIVE

[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/rcar-du/rcar_lvds.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c b/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c
index 92ba43a6fe38..471a2d3bc203 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_lvds.c
@@ -361,7 +361,7 @@ static void rcar_lvds_enable(struct drm_bridge *bridge,
 	int ret;
 
 	ret = pm_runtime_resume_and_get(lvds->dev);
-	if (ret)
+	if (ret < 0)
 		return;
 
 	/* Enable the companion LVDS encoder in dual-link mode. */
@@ -550,7 +550,7 @@ int rcar_lvds_pclk_enable(struct drm_bridge *bridge, unsigned long freq,
 	dev_dbg(lvds->dev, "enabling LVDS PLL, freq=%luHz\n", freq);
 
 	ret = pm_runtime_resume_and_get(lvds->dev);
-	if (ret)
+	if (ret < 0)
 		return ret;
 
 	rcar_lvds_pll_setup_d3_e3(lvds, freq, dot_clk_only);
-- 
2.43.0