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atomic_t: Cast to volatile when accessing atomic variables

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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 <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Anton Blanchard 2010-05-17 14:33:53 +10:00 • committed by Linus Torvalds
commit f3d46f9d31
20 changed files with 25 additions and 25 deletions
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4
arch/alpha/include/asm/atomic.h
View file

@ -17,8 +17,8 @@
#define ATOMIC_INIT(i) ( (atomic_t) { (i) } )
#define ATOMIC64_INIT(i) ( (atomic64_t) { (i) } )
#define atomic_read(v) ((v)->counter + 0)
#define atomic64_read(v) ((v)->counter + 0)
#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))