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drm/nouveau: properly handle allocation failure in nouveau_sgdma_populate

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Not cleaning after alloc failure would result in crash on destroy,
because nouveau_sgdma_clear assumes "ttm_alloced" to be not null when
"pages" is not null.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Marcin Slusarz 2011-08-22 23:14:05 +02:00 committed by Ben Skeggs
parent cfd8be088e
commit 17c8b96093
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/nouveau/nouveau_sgdma.c
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@ -37,8 +37,11 @@ nouveau_sgdma_populate(struct ttm_backend *be, unsigned long num_pages,
return -ENOMEM; return -ENOMEM;
nvbe->ttm_alloced = kmalloc(sizeof(bool) * num_pages, GFP_KERNEL); nvbe->ttm_alloced = kmalloc(sizeof(bool) * num_pages, GFP_KERNEL);
if (!nvbe->ttm_alloced) if (!nvbe->ttm_alloced) {
kfree(nvbe->pages);
nvbe->pages = NULL;
return -ENOMEM; return -ENOMEM;
}
nvbe->nr_pages = 0; nvbe->nr_pages = 0;
while (num_pages--) { while (num_pages--) {