drm/rockchip: Balance irq refcount on failure

If create_crtc fails in vop bind, ensure the irq refcount is zeroed
back out before exiting.

Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 37e6ba92b8fa..c7eba305c488 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1547,11 +1547,15 @@ static int vop_bind(struct device *dev, struct device *master, void *data)
 
         ret = vop_create_crtc(vop);
         if (ret)
-                return ret;
+                goto err_enable_irq;
 
         pm_runtime_enable(&pdev->dev);
 
         return 0;
+
+err_enable_irq:
+        enable_irq(vop->irq); /* To balance out the disable_irq above */
+        return ret;
 }
 
 static void vop_unbind(struct device *dev, struct device *master, void *data)