| commit | a7d068336197945dc4af65c5973c996e526d51cb | [log] [tgz] |
|---|---|---|
| author | Nicolas Pitre <nico@cam.org> | Wed Nov 16 15:05:11 2005 +0000 |
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | Wed Nov 16 15:05:11 2005 +0000 |
| tree | cbe903bef21fce0d5923cc83071b7b66d00d94c4 | |
| parent | 224b5be6ddc12fa7587433878866cd39e7b935f5 [diff] |
[ARM] 3165/1: fix atomic_cmpxchg() implementation for ARMv6+ Patch from Nicolas Pitre If 'old' and 'oldval' are different then 'res' never gets set. In that case, if ever %0 happened to contain anything but zero (rather likely) then the code will loop forever (or until another CPU just come along and change the atomic value to match 'old' which is rather unlikely). Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>