From: Josh Poimboeuf <jpoimboe@us.ibm.com>
Date: Tue, 7 Oct 2008 06:10:03 +0000 (+0000)
Subject: powerpc: Fix error path in kernel_thread function
X-Git-Tag: v2.6.28-rc1~569^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=41c2e949cb7b80c5a6247c7df97759953b0f71b5;p=pandora-kernel.git

powerpc: Fix error path in kernel_thread function

The powerpc 32-bit and 64-bit kernel_thread functions don't properly
propagate errors being returned by the clone syscall.  (In the case of
error, the syscall exit code returns a positive errno in r3 and sets
the CR0[SO] bit.)

This patch fixes that by negating r3 if CR0[SO] is set after the syscall.

Signed-off-by: Josh Poimboeuf <jpoimboe@us.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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