From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Sun, 3 Aug 2014 10:59:35 +0000 (+0900)
Subject: drm/ttm: Fix possible division by 0 in ttm_dma_pool_shrink_scan().
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~125^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11e504cc705e8ccb06ac93a276e11b5e8fee4d40;p=pandora-kernel.git

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

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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