From: Alan Douglas <adouglas@cadence.com>
Date: Wed, 23 Jul 2014 10:06:40 +0000 (+0400)
Subject: xtensa: fix address checks in dma_{alloc,free}_coherent
X-Git-Tag: omap-fixes-against-v3.17-rc3~14^2^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ca49463c44c970b1ab1d71b0f268bfdf8427a7e;p=pandora-kernel.git

xtensa: fix address checks in dma_{alloc,free}_coherent

Virtual address is translated to the XCHAL_KSEG_CACHED region in the
dma_free_coherent, but is checked to be in the 0...XCHAL_KSEG_SIZE
range.

Change check for end of the range from 'addr >= X' to 'addr > X - 1' to
handle the case of X == 0.

Replace 'if (C) BUG();' construct with 'BUG_ON(C);'.

Cc: stable@vger.kernel.org
Signed-off-by: Alan Douglas <adouglas@cadence.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---

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