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authorAnton Blanchard <anton@samba.org>2010-05-17 14:33:53 +1000
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-17 07:57:27 -0700
commitf3d46f9d3194e0329216002a8724d4c0957abc79 (patch)
tree6d9413e4a448d7b8d342c40297c4fbe0b9c4c2f0 /arch/m68k
parente40152ee1e1c7a63f4777791863215e3faa37a86 (diff)
downloadop-kernel-dev-f3d46f9d3194e0329216002a8724d4c0957abc79.zip
op-kernel-dev-f3d46f9d3194e0329216002a8724d4c0957abc79.tar.gz
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>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/include/asm/atomic_mm.h2
-rw-r--r--arch/m68k/include/asm/atomic_no.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/m68k/include/asm/atomic_mm.h b/arch/m68k/include/asm/atomic_mm.h
index d9d2ed6..6a223b3 100644
--- a/arch/m68k/include/asm/atomic_mm.h
+++ b/arch/m68k/include/asm/atomic_mm.h
@@ -15,7 +15,7 @@
#define ATOMIC_INIT(i) { (i) }
-#define atomic_read(v) ((v)->counter)
+#define atomic_read(v) (*(volatile int *)&(v)->counter)
#define atomic_set(v, i) (((v)->counter) = i)
static inline void atomic_add(int i, atomic_t *v)
diff --git a/arch/m68k/include/asm/atomic_no.h b/arch/m68k/include/asm/atomic_no.h
index 5674cb9..289310c 100644
--- a/arch/m68k/include/asm/atomic_no.h
+++ b/arch/m68k/include/asm/atomic_no.h
@@ -15,7 +15,7 @@
#define ATOMIC_INIT(i) { (i) }
-#define atomic_read(v) ((v)->counter)
+#define atomic_read(v) (*(volatile int *)&(v)->counter)
#define atomic_set(v, i) (((v)->counter) = i)
static __inline__ void atomic_add(int i, atomic_t *v)
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