[ 3.5.y.z extended stable ] Patch "tilepro: work around module link error with gcc 4.7" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    tilepro: work around module link error with gcc 4.7

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From ea8c1cc91a7c1bfd5f3482c334fd985a45f30e11 Mon Sep 17 00:00:00 2001
From: Chris Metcalf <cmetcalf at tilera.com>
Date: Sat, 15 Jun 2013 16:47:47 -0400
Subject: [PATCH] tilepro: work around module link error with gcc 4.7

commit 3cb3f839d306443f3d1e79b0bde1a2ad2c12b555 upstream.

gcc 4.7.x is emitting calls to __ffsdi2 where previously
it used to inline the appropriate ctz instructions.
While this needs to be fixed in gcc, it's also easy to avoid
having it cause build failures when building with those
compilers by exporting __ffsdi2 to modules.

Signed-off-by: Chris Metcalf <cmetcalf at tilera.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 arch/tile/lib/exports.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/tile/lib/exports.c b/arch/tile/lib/exports.c
index dd5f0a3..b05d919 100644
--- a/arch/tile/lib/exports.c
+++ b/arch/tile/lib/exports.c
@@ -82,4 +82,6 @@ uint64_t __ashrdi3(uint64_t, unsigned int);
 EXPORT_SYMBOL(__ashrdi3);
 uint64_t __ashldi3(uint64_t, unsigned int);
 EXPORT_SYMBOL(__ashldi3);
+int __ffsdi2(uint64_t);
+EXPORT_SYMBOL(__ffsdi2);
 #endif
--
1.8.1.2