Ralf Baechle 5095202603 [MIPS] Fix bug in atomic_sub_if_positive. ...

The branch optimization fixes in 2.6.21 introduced a bug in
atomic_sub_if_positive that causes it to return even when the sc
instruction fails. The result is that e.g. down_trylock becomes unreliable
as the semaphore counter is not always decremented.

Original MUA-shredded patch from Morten Larsen <mlarsen@broadcom.com>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2008-07-04 08:22:15 +01:00

18 KiB

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