From: James Jones <jajones@nvidia.com>
Date: Tue, 23 Nov 2010 23:21:37 +0000 (+0100)
Subject: ARM: 6482/2: Fix find_next_zero_bit and related assembly
X-Git-Tag: v2.6.27.57~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f0097b8e359731d22c017805421dca8ab3bf691c;p=pandora-kernel.git

ARM: 6482/2: Fix find_next_zero_bit and related assembly

commit 0e91ec0c06d2cd15071a6021c94840a50e6671aa upstream.

The find_next_bit, find_first_bit, find_next_zero_bit
and find_first_zero_bit functions were not properly
clamping to the maxbit argument at the bit level. They
were instead only checking maxbit at the byte level.
To fix this, add a compare and a conditional move
instruction to the end of the common bit-within-the-
byte code used by all the functions and be sure not to
clobber the maxbit argument before it is used.

Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: James Jones <jajones@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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