From: Michael Ellerman <mpe@ellerman.id.au>
Date: Thu, 23 Jul 2015 10:21:04 +0000 (+1000)
Subject: powerpc: Don't negate error in syscall_set_return_value()
X-Git-Tag: omap-for-v4.3/fixes-rc1~100^2~81
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b1a3702a65c1a6511e4c95ecb3770dfdf235bcf;p=pandora-kernel.git

powerpc: Don't negate error in syscall_set_return_value()

Currently the only caller of syscall_set_return_value() is seccomp
filter, which is not enabled on powerpc.

This means we have not noticed that our implementation of
syscall_set_return_value() negates error, even though the value passed
in is already negative.

So remove the negation in syscall_set_return_value(), and expect the
caller to do it like all other implementations do.

Also add a comment about the ccr handling.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Kees Cook <keescook@chromium.org>
---

Reading git-diff-tree failed