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| author | surinder <srplsnh@gmail.com> | 2008-05-28 09:51:16 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-06-02 13:44:17 +0100 |
| commit | 1e5c594607778f551b729577b046ee5d9333cfb5 (patch) | |
| tree | d153988fa057faa33e747b94dbc73b5e9075c105 /include/asm-arm | |
| parent | ea6a7404da4b381b35bcec48338d376a3873ea46 (diff) | |
| download | linux-1e5c594607778f551b729577b046ee5d9333cfb5.tar.gz linux-1e5c594607778f551b729577b046ee5d9333cfb5.tar.bz2 linux-1e5c594607778f551b729577b046ee5d9333cfb5.zip | |
[ARM] 5067/1: _raw_write_can_lock macro bugfix
The current __raw_write_can_lock macro tests whether the lock can be
locked by checking if it is equal to 0x80000000, whereas the lock
should be lockable if its value is 0 i.e. unlocked state is
represented by 0. Hence the macro should test the value of lock
against 0 and not 0x80000000.
Signed-off-by: Surinder Pal Singh <srplsnh@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm')
| -rw-r--r-- | include/asm-arm/spinlock.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-arm/spinlock.h b/include/asm-arm/spinlock.h index 800ba5254daf..2b41ebbfa7ff 100644 --- a/include/asm-arm/spinlock.h +++ b/include/asm-arm/spinlock.h @@ -142,7 +142,7 @@ static inline void __raw_write_unlock(raw_rwlock_t *rw) } /* write_can_lock - would write_trylock() succeed? */ -#define __raw_write_can_lock(x) ((x)->lock == 0x80000000) +#define __raw_write_can_lock(x) ((x)->lock == 0) /* * Read locks are a bit more hairy: |