Revert "xxx: use volatile on atomic_set/atomic_read (REVISIT)"

Per Documentation/atomic_ops.txt this is NOT needed

This reverts commit 0d00e64.

Signed-off-by: Vineet Gupta <[email protected]>

Author: vineetgarc

arch/arc/include/asm/atomic.h

@@ -17,11 +17,11 @@
 #include <asm/barrier.h>
 #include <asm/smp.h>
 
-#define atomic_read(v)  (*(volatile int *)&(v)->counter)
+#define atomic_read(v)  ((v)->counter)
 
 #ifdef CONFIG_ARC_HAS_LLSC
 
-#define atomic_set(v, i) ((*(volatile int *)&(v)->counter) = (i))
+#define atomic_set(v, i) (((v)->counter) = (i))
 
 #ifdef CONFIG_ISA_ARCV2
 #define PREFETCHW	"	prefetchw   [%1]	\n"