atomic_t: Cast to volatile when accessing atomic variables

In preparation for removing volatile from the atomic_t definition, this
patch adds a volatile cast to all the atomic read functions.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index 88405cb0832a..4e1948447a00 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -21,8 +21,8 @@
 #define ATOMIC_INIT(i)          ((atomic_t) { (i) })
 #define ATOMIC64_INIT(i)        ((atomic64_t) { (i) })
 
-#define atomic_read(v)          ((v)->counter)
-#define atomic64_read(v)        ((v)->counter)
+#define atomic_read(v)          (*(volatile int *)&(v)->counter)
+#define atomic64_read(v)        (*(volatile long *)&(v)->counter)
 
 #define atomic_set(v,i)         (((v)->counter) = (i))
 #define atomic64_set(v,i)       (((v)->counter) = (i))