From: SUGIOKA Toshinobu <sugioka@itonet.co.jp>
Date: Wed, 21 Jan 2009 00:42:10 +0000 (+0900)
Subject: sh: fix unaligned and nonexistent address handling
X-Git-Tag: v2.6.29-rc3~35^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2afb447f33c29cb000a494396559f8005d3e33c1;p=pandora-kernel.git

sh: fix unaligned and nonexistent address handling

unaligned and nonexistent address causes wrong exception
handling in traps_32.c(handle_unaligned_access).

'handle_unalinged_ins' should return -EFAULT if address error
is fixed up with kernel exception table, otherwise
'handle_unaligned_access' increases already fixed program counter
and then crash.

for example
   ioctl(fd, TCGETA, (struct termio *)-1)
never return and stay in TASK_UNINTERRUPTIBLE state forever
in my kernel.

Signed-off-by: SUGIOKA Toshinobu <sugioka@itonet.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

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