nouveau: disable all card interrupts when unknown PFIFO IRQ occurs.

This is possibly temporary.  I can trigger an unending IRQ storm on G8x
in some circumstances, and have no idea how to handle that particular PFIFO
exception correctly yet.

diff --git a/shared-core/nouveau_irq.c b/shared-core/nouveau_irq.c
index ccbc742..103fd96 100644 (file)
--- a/shared-core/nouveau_irq.c
+++ b/shared-core/nouveau_irq.c
@@ -120,6 +120,7 @@ nouveau_fifo_irq_handler(struct drm_device *dev)
                if (status) {
                        DRM_INFO("Unhandled PFIFO_INTR - 0x%08x\n", status);
                        NV_WRITE(NV03_PFIFO_INTR_0, status);
+                       NV_WRITE(NV03_PMC_INTR_EN_0, 0);
                }
 
                NV_WRITE(NV03_PFIFO_CACHES, reassign);