nvc0/fb: shut up PMFB interrupt after the first occurrence

Signed-off-by: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/nvc0_fb.c b/drivers/gpu/drm/nouveau/nvc0_fb.c
index 5bf5503..f704e94 100644 (file)
--- a/drivers/gpu/drm/nouveau/nvc0_fb.c
+++ b/drivers/gpu/drm/nouveau/nvc0_fb.c
@@ -54,6 +54,11 @@ nvc0_mfb_isr(struct drm_device *dev)
                        nvc0_mfb_subp_isr(dev, unit, subp);
                units &= ~(1 << unit);
        }
+
+       /* we do something horribly wrong and upset PMFB a lot, so mask off
+        * interrupts from it after the first one until it's fixed
+        */
+       nv_mask(dev, 0x000640, 0x02000000, 0x00000000);
 }
 
 static void