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sna/dri: Defensively check for GTT mmap failure during fallback 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-10-17 13:54:51 +01:00
parent 7927f9a351
commit ba6c82cd9d
1 changed files with 3 additions and 0 deletions
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3
src/sna/sna_dri.c
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@ -525,6 +525,9 @@ sna_dri_copy_fallback(struct sna *sna, int bpp,
void *dst = kgem_bo_map__gtt(&sna->kgem, dst_bo);
void *src = kgem_bo_map__gtt(&sna->kgem, src_bo);
if (dst == NULL || src == NULL)
return;
DBG(("%s: src(%d, %d), dst(%d, %d) x %d\n",
__FUNCTION__, sx, sy, dx, dy, n));