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authorBen Skeggs <bskeggs@redhat.com>2012-10-31 10:51:00 +1000
committerBen Skeggs <bskeggs@redhat.com>2012-10-31 11:23:23 +1000
commit5cad16acd25b16681a060d28d10eeacf98d07701 (patch)
treed00389a956a6809d392ce95d20331ed6122bc675 /drivers
parenta7dbf00433fa9dc6f4a3828a17d56a9df2bd06b1 (diff)
drm/nv50/fb: prevent oops on chipsets without compression tags
Unconditionally create the tagram mm, even if there's zero tags. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c
index 27fb1af7a779..5f570806143a 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/nv50.c
@@ -219,13 +219,11 @@ nv50_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
((priv->base.ram.size & 0x000000ff) << 32);
tags = nv_rd32(priv, 0x100320);
- if (tags) {
- ret = nouveau_mm_init(&priv->base.tags, 0, tags, 1);
- if (ret)
- return ret;
+ ret = nouveau_mm_init(&priv->base.tags, 0, tags, 1);
+ if (ret)
+ return ret;
- nv_debug(priv, "%d compression tags\n", tags);
- }
+ nv_debug(priv, "%d compression tags\n", tags);
size = (priv->base.ram.size >> 12) - rsvd_head - rsvd_tail;
switch (device->chipset) {