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drm/nouveau: use dma.max rather than pushbuf size for checking GET validity 

Some upcoming G80 DMA changes will depend on this, but it's split out for
bisectibility just in case it causes some unexpected issues.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2010-01-08 10:53:40 +10:00 committed by Dave Airlie
parent cc6e496587
commit 400f14ac4e
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nouveau_dma.c
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@ -130,7 +130,7 @@ READ_GET(struct nouveau_channel *chan, uint32_t *get)
val = nvchan_rd32(chan, chan->user_get);
if (val < chan->pushbuf_base ||
val >= chan->pushbuf_base + chan->pushbuf_bo->bo.mem.size) {
val > chan->pushbuf_base + (chan->dma.max << 2)) {
/* meaningless to dma_wait() except to know whether the
* GPU has stalled or not
*/