1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 0c065f425c84..1f4f83d6fbe6 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -285,7 +285,8 @@ void r600_hpd_init(struct radeon_device *rdev)
                         }
                 }
         }
-        r600_irq_set(rdev);
+        if (rdev->irq.installed)
+                r600_irq_set(rdev);
 }
 
 void r600_hpd_fini(struct radeon_device *rdev)
@@ -2461,6 +2462,10 @@ int r600_irq_set(struct radeon_device *rdev)
         u32 mode_int = 0;
         u32 hpd1, hpd2, hpd3, hpd4 = 0, hpd5 = 0, hpd6 = 0;
 
+        if (!rdev->irq.installed) {
+                WARN(1, "Can't enable IRQ/MSI because no handler is installed.\n");
+                return -EINVAL;
+        }
         /* don't enable anything if the ih is disabled */
         if (!rdev->ih.enabled)
                 return 0;