drm/fsl-dcu: disable clock on error path

In fsl_dcu_drm_pm_resume() we should disable the previously enabled
clock (fsl_dev->clk) when enabling fsl_dev->pix_clk fails.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>

diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 5fc8ebd..092aaec 100644 (file)
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -270,7 +270,7 @@ static int fsl_dcu_drm_pm_resume(struct device *dev)
        ret = clk_prepare_enable(fsl_dev->pix_clk);
        if (ret < 0) {
                dev_err(dev, "failed to enable pix clk\n");
-               return ret;
+               goto disable_dcu_clk;
        }
 
        fsl_dcu_drm_init_planes(fsl_dev->drm);
@@ -284,6 +284,10 @@ static int fsl_dcu_drm_pm_resume(struct device *dev)
        enable_irq(fsl_dev->irq);
 
        return 0;
+
+disable_dcu_clk:
+       clk_disable_unprepare(fsl_dev->clk);
+       return ret;
 }
 #endif