locking/atomic: Make test_and_*_bit() ordered on failure

[linux-2.6-microblaze.git] / include / asm-generic / bitops / atomic.h

diff --git a/include/asm-generic/bitops/atomic.h b/include/asm-generic/bitops/atomic.h
index 3096f08..71ab4ba 100644 (file)
--- a/include/asm-generic/bitops/atomic.h
+++ b/include/asm-generic/bitops/atomic.h
@@ -39,9 +39,6 @@ arch_test_and_set_bit(unsigned int nr, volatile unsigned long *p)
        unsigned long mask = BIT_MASK(nr);
 
        p += BIT_WORD(nr);
-       if (READ_ONCE(*p) & mask)
-               return 1;
-
        old = arch_atomic_long_fetch_or(mask, (atomic_long_t *)p);
        return !!(old & mask);
 }
@@ -53,9 +50,6 @@ arch_test_and_clear_bit(unsigned int nr, volatile unsigned long *p)
        unsigned long mask = BIT_MASK(nr);
 
        p += BIT_WORD(nr);
-       if (!(READ_ONCE(*p) & mask))
-               return 0;
-
        old = arch_atomic_long_fetch_andnot(mask, (atomic_long_t *)p);
        return !!(old & mask);
 }