drm/radeon/kms: disable MSI on IGP chips

Doesn't seem to work reliably and the pci quirks don't
always work.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c
index 68519b406ca6..a212041e8b0b 100644
--- a/drivers/gpu/drm/radeon/radeon_irq_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c
@@ -114,13 +114,11 @@ int radeon_irq_kms_init(struct radeon_device *rdev)
         }
         /* enable msi */
         rdev->msi_enabled = 0;
-        /* MSIs don't seem to work on my rs780;
-         * not sure about rs880 or other rs780s.
-         * Needs more investigation.
+        /* MSIs don't seem to work reliably on all IGP
+         * chips.  Disable MSI on them for now.
          */
         if ((rdev->family >= CHIP_RV380) &&
-            (rdev->family != CHIP_RS780) &&
-            (rdev->family != CHIP_RS880)) {
+            (!(rdev->flags & RADEON_IS_IGP))) {
                 int ret = pci_enable_msi(rdev->pdev);
                 if (!ret) {
                         rdev->msi_enabled = 1;