[PATCH 10/24] make atomic_read() behave consistently on m32r
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From: Chris Snook <hidden>
Date: 2007-08-09 13:54:40
Also in:
linux-arch, lkml
From: Chris Snook <redacted> Purify volatile use for atomic_t on m32r. Signed-off-by: Chris Snook <redacted>
--- linux-2.6.23-rc2-orig/include/asm-m32r/atomic.h 2007-07-08 19:32:17.000000000 -0400
+++ linux-2.6.23-rc2/include/asm-m32r/atomic.h 2007-08-09 06:55:53.000000000 -0400@@ -22,7 +22,7 @@ * on us. We need to use _exactly_ the address the user gave us, * not some alias that contains the same information. */ -typedef struct { volatile int counter; } atomic_t; +typedef struct { int counter; } atomic_t; #define ATOMIC_INIT(i) { (i) }
@@ -32,7 +32,7 @@ typedef struct { volatile int counter; } * * Atomically reads the value of @v. */ -#define atomic_read(v) ((v)->counter) +#define atomic_read(v) (*(volatile int *)&(v)->counter) /** * atomic_set - set atomic variable