diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2015-04-13 13:09:28 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2015-04-14 17:00:55 +1000 |
| commit | 91c772ec129dc63038ee5642f441a03584474e1e (patch) | |
| tree | 075bf06fa0aaf3340517d66b612621d9a91f297c | |
| parent | ddec1a2b4c01b51134eca13fe6915d945745f1c9 (diff) | |
drm/nouveau/gr/gk104-: prevent reading non-existent regs in intr handler
Under certain circumstances the trapped address will contain subc 7,
which GK104 GR doesn't have anymore.
Notice this case to avoid causing additional priv ring faults.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c index 3f05414c077c..5606c25e5d02 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c @@ -1097,9 +1097,14 @@ gf100_gr_intr(struct nvkm_subdev *subdev) u32 subc = (addr & 0x00070000) >> 16; u32 data = nv_rd32(priv, 0x400708); u32 code = nv_rd32(priv, 0x400110); - u32 class = nv_rd32(priv, 0x404200 + (subc * 4)); + u32 class; int chid; + if (nv_device(priv)->card_type < NV_E0 || subc < 4) + class = nv_rd32(priv, 0x404200 + (subc * 4)); + else + class = 0x0000; + engctx = nvkm_engctx_get(engine, inst); chid = pfifo->chid(pfifo, engctx); |