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tilepro: work around module link error with gcc 4.7

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commit 3cb3f839d3 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@tilera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chris Metcalf 2013-06-15 16:47:47 -04:00 committed by Greg Kroah-Hartman
parent f86571e860
commit 68447fe9bd
1 changed files with 2 additions and 0 deletions
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arch/tile/lib/exports.c
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@ -90,4 +90,6 @@ 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