From: Nicolas Pitre <nicolas.pitre@linaro.org>
Date: Wed, 12 Aug 2015 15:45:02 +0000 (+0100)
Subject: ARM: 8414/1: __copy_to_user_memcpy: fix mmap semaphore usage
X-Git-Tag: omap-for-v4.3/fixes-merge-window~65^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f64b247e63ac8c214efa6725366b42563ab138c;p=pandora-kernel.git

ARM: 8414/1: __copy_to_user_memcpy: fix mmap semaphore usage

The mmap semaphore should not be taken when page faults are disabled.
Since pagefault_disable() no longer disables preemption, we now need
to use faulthandler_disabled() in place of in_atomic().

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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