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

[Kamal Mostafa]

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-3.8.y-queue branch of the 3.8.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-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.4.

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

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From ee235a598bb2f1cf7fd730968def2d9ed5b05919 Mon Sep 17 00:00:00 2001
From: Chris Metcalf <cmetcalf at tilera.com>
Date: Sat, 15 Jun 2013 16:47:47 -0400
Subject: 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: Kamal Mostafa <kamal 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 4385cb6..a93b02a 100644
--- a/arch/tile/lib/exports.c
+++ b/arch/tile/lib/exports.c
@@ -84,4 +84,6 @@ 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