drm/nv50: fix iommu errors caused by device reading from address 0

[safe/jmp/linux-2.6] / drivers / gpu / drm / nouveau / nouveau_fence.c

diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
index 0cff7eb..faddf53 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
@@ -142,7 +142,7 @@ nouveau_fence_emit(struct nouveau_fence *fence)
        list_add_tail(&fence->entry, &chan->fence.pending);
        spin_unlock_irqrestore(&chan->fence.lock, flags);
 
-       BEGIN_RING(chan, NvSubM2MF, USE_REFCNT ? 0x0050 : 0x0150, 1);
+       BEGIN_RING(chan, NvSubSw, USE_REFCNT ? 0x0050 : 0x0150, 1);
        OUT_RING(chan, fence->sequence);
        FIRE_RING(chan);
 
@@ -205,7 +205,7 @@ nouveau_fence_wait(void *sync_obj, void *sync_arg, bool lazy, bool intr)
                        schedule_timeout(1);
 
                if (intr && signal_pending(current)) {
-                       ret = -ERESTART;
+                       ret = -ERESTARTSYS;
                        break;
                }
        }