asm-generic/atomic.h: fix type used in atomic_clear_mask

The atomic helpers are supposed to take an atomic_t pointer, not a random unsigned long pointer. So convert atomic_clear_mask over. While we're here, also add some nice documentation to the func. Signed-off-by: Mike Frysinger <[email protected]> Cc: Arun Sharma <[email protected]> Cc: Arnd Bergmann <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
niw · Jul 26, 2011 · f6081bd · f6081bd
1 parent 3eea44e
commit f6081bd
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
@@ -140,13 +140,20 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
   return c;
 }
 
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+/**
+ * atomic_clear_mask - Atomically clear bits in atomic variable
+ * @mask: Mask of the bits to be cleared
+ * @v: pointer of type atomic_t
+ *
+ * Atomically clears the bits set in @mask from @v
+ */
+static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
 {
 	unsigned long flags;
 
 	mask = ~mask;
 	raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
-	*addr &= mask;
+	v->counter &= mask;
 	raw_local_irq_restore(flags);
 }