if irq already enabled well just keep trucking

diff --git a/linux-core/drm_irq.c b/linux-core/drm_irq.c
index 367d2dd..c75f20b 100644 (file)
--- a/linux-core/drm_irq.c
+++ b/linux-core/drm_irq.c
@@ -183,7 +183,7 @@ int drm_irq_install(struct drm_device * dev)
 
        if (dev->irq_enabled) {
                mutex_unlock(&dev->struct_mutex);
-               return -EBUSY;
+               return 0;
        }
        dev->irq_enabled = 1;
        mutex_unlock(&dev->struct_mutex);