1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index f85aaf21e783..0a6f0b3bdc78 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -37,6 +37,7 @@
 
 #include <linux/interrupt.h>    /* For task queue support */
 
+#include <linux/vgaarb.h>
 /**
  * Get interrupt from bus id.
  *
@@ -171,6 +172,26 @@ err:
 }
 EXPORT_SYMBOL(drm_vblank_init);
 
+static void drm_irq_vgaarb_nokms(void *cookie, bool state)
+{
+        struct drm_device *dev = cookie;
+
+        if (dev->driver->vgaarb_irq) {
+                dev->driver->vgaarb_irq(dev, state);
+                return;
+        }
+
+        if (!dev->irq_enabled)
+                return;
+
+        if (state)
+                dev->driver->irq_uninstall(dev);
+        else {
+                dev->driver->irq_preinstall(dev);
+                dev->driver->irq_postinstall(dev);
+        }
+}
+
 /**
  * Install IRQ handler.
  *
@@ -231,6 +252,9 @@ int drm_irq_install(struct drm_device *dev)
                 return ret;
         }
 
+        if (!drm_core_check_feature(dev, DRIVER_MODESET))
+                vga_client_register(dev->pdev, (void *)dev, drm_irq_vgaarb_nokms, NULL);
+
         /* After installing handler */
         ret = dev->driver->irq_postinstall(dev);
         if (ret < 0) {
@@ -279,6 +303,9 @@ int drm_irq_uninstall(struct drm_device * dev)
 
         DRM_DEBUG("irq=%d\n", dev->pdev->irq);
 
+        if (!drm_core_check_feature(dev, DRIVER_MODESET))
+                vga_client_register(dev->pdev, NULL, NULL, NULL);
+
         dev->driver->irq_uninstall(dev);
 
         free_irq(dev->pdev->irq, dev);