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drm/nv10: Don't oops if the card wants to switch to a channel with no grctx. 

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Francisco Jerez 2010-09-21 19:03:19 +02:00 committed by Ben Skeggs
parent 80dad869a3
commit bb338bb6f2
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nv10_graph.c
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@ -803,7 +803,7 @@ nv10_graph_context_switch(struct drm_device *dev)
/* Load context for next channel */
chid = (nv_rd32(dev, NV04_PGRAPH_TRAPPED_ADDR) >> 20) & 0x1f;
chan = dev_priv->fifos[chid];
if (chan)
if (chan && chan->pgraph_ctx)
nv10_graph_load_context(chan);
pgraph->fifo_access(dev, true);