drm/ttm: Fix possible division by 0 in ttm_dma_pool_shrink_scan().

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list_empty(&_manager->pools) being false before taking _manager->lock
does not guarantee that _manager->npools != 0 after taking _manager->lock
because _manager->npools is updated under _manager->lock.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: stable <stable@kernel.org> [3.3+]
Signed-off-by: Dave Airlie <airlied@redhat.com>

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Tetsuo Handa 2014-08-03 19:59:35 +09:00 • committed by Dave Airlie

parent 74cd62ea46

commit 11e504cc70

1 changed files with 3 additions and 0 deletions

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drivers/gpu/drm/ttm/ttm_page_alloc_dma.c

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