From: Ben Skeggs <bskeggs@redhat.com>
Date: Fri, 11 Mar 2016 03:09:28 +0000 (+1000)
Subject: drm/nouveau/fifo/gf100: don't attempt recovery of unknown mmu engines
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f22d7d45fab4a1a5cba7b932b55d74e925ffd6be;p=linux-beck.git

drm/nouveau/fifo/gf100: don't attempt recovery of unknown mmu engines

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c
index b9090bf597f3..c56311acc9fe 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gf100.c
@@ -334,7 +334,7 @@ gf100_fifo_intr_fault(struct gf100_fifo *fifo, int unit)
 		snprintf(gpcid, sizeof(gpcid), "GPC%d/", gpc);
 	}
 
-	if (eu) {
+	if (eu && eu->data2) {
 		switch (eu->data2) {
 		case NVKM_SUBDEV_BAR:
 			nvkm_mask(device, 0x001704, 0x00000000, 0x00000000);