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tilepro: work around module link error with gcc 4.7

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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>
Cc: stable@kernel.org
This commit is contained in:
Chris Metcalf 2013-06-15 16:47:47 -04:00
parent 317ddd256b
commit 3cb3f839d3
1 changed files with 2 additions and 0 deletions
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arch/tile/lib/exports.c
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@ -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