X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sparc%2Fspinlock.h;h=1c75474ba1df706b1abb5e9c96b50f8fc18dfc5b;hb=20f99dcf417a28089ef6c877ae97f5dec2eab435;hp=3350c90c7869f5da811f8fcb9df38716aec590d0;hpb=79072f38909e3d9883317238887460c39ddcc4cb;p=linux-2.6

diff --git a/include/asm-sparc/spinlock.h b/include/asm-sparc/spinlock.h
index 3350c90c78..1c75474ba1 100644
--- a/include/asm-sparc/spinlock.h
+++ b/include/asm-sparc/spinlock.h
@@ -154,6 +154,9 @@ static inline int __raw_write_trylock(raw_rwlock_t *rw)
 #define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
 #define __raw_read_trylock(lock) generic__raw_read_trylock(lock)
 
+#define __raw_read_can_lock(rw) (!((rw)->lock & 0xff))
+#define __raw_write_can_lock(rw) (!(rw)->lock)
+
 #endif /* !(__ASSEMBLY__) */
 
 #endif /* __SPARC_SPINLOCK_H */