diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2008-07-03 23:28:35 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-04 08:22:15 +0100 |
| commit | 50952026036c7b4212b90091bf23a264c0ccc1fb (patch) | |
| tree | 50c5865ab0fdc8d4f36a69ddcc86037489a90fa9 /Documentation/sgi-ioc4.txt | |
| parent | bf9127c36341573dc47a9c2fc003dcf13bbbf246 (diff) | |
[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>
Diffstat (limited to 'Documentation/sgi-ioc4.txt')
0 files changed, 0 insertions, 0 deletions