From: Steven J. Magnani <steve@digidescorp.com>
Date: Thu, 6 May 2010 21:38:33 +0000 (-0500)
Subject: microblaze: fix get_user/put_user side-effects
X-Git-Tag: v2.6.34~17^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=538722ca3b762023ac65cec214901a1ebff8b575;p=pandora-kernel.git

microblaze: fix get_user/put_user side-effects

The Microblaze implementations of get_user() and (MMU) put_user() evaluate
the address argument more than once. This causes unexpected side-effects for
invocations that include increment operators, i.e. get_user(foo, bar++).

This patch also removes the distinction between MMU and noMMU put_user().

Without the patch:
  $ echo 1234567890 > /proc/sys/kernel/core_pattern
  $ cat /proc/sys/kernel/core_pattern
  12345

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
---

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