1 files changed, 11 insertions, 9 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index ea4c645ece11..a212041e8b0b 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -67,9 +67,10 @@ void radeon_driver_irq_preinstall_kms(struct drm_device *dev)
 
         /* Disable *all* interrupts */
         rdev->irq.sw_int = false;
-        for (i = 0; i < 2; i++) {
+        for (i = 0; i < rdev->num_crtc; i++)
                 rdev->irq.crtc_vblank_int[i] = false;
-        }
+        for (i = 0; i < 6; i++)
+                rdev->irq.hpd[i] = false;
         radeon_irq_set(rdev);
         /* Clear bits */
         radeon_irq_process(rdev);
@@ -95,28 +96,29 @@ void radeon_driver_irq_uninstall_kms(struct drm_device *dev)
         }
         /* Disable *all* interrupts */
         rdev->irq.sw_int = false;
-        for (i = 0; i < 2; i++) {
+        for (i = 0; i < rdev->num_crtc; i++)
                 rdev->irq.crtc_vblank_int[i] = false;
+        for (i = 0; i < 6; i++)
                 rdev->irq.hpd[i] = false;
-        }
         radeon_irq_set(rdev);
 }
 
 int radeon_irq_kms_init(struct radeon_device *rdev)
 {
         int r = 0;
-        int num_crtc = 2;
 
-        if (rdev->flags & RADEON_SINGLE_CRTC)
-                num_crtc = 1;
         spin_lock_init(&rdev->irq.sw_lock);
-        r = drm_vblank_init(rdev->ddev, num_crtc);
+        r = drm_vblank_init(rdev->ddev, rdev->num_crtc);
         if (r) {
                 return r;
         }
         /* enable msi */
         rdev->msi_enabled = 0;
-        if (rdev->family >= CHIP_RV380) {
+        /* MSIs don't seem to work reliably on all IGP
+         * chips.  Disable MSI on them for now.
+         */
+        if ((rdev->family >= CHIP_RV380) &&
+            (!(rdev->flags & RADEON_IS_IGP))) {
                 int ret = pci_enable_msi(rdev->pdev);
                 if (!ret) {
                         rdev->msi_enabled = 1;