Commit-ID: 86a664d58f3ba2398a378dc9da6d4cfa737d2281
Gitweb: http://git.kernel.org/tip/86a664d58f3ba2398a378dc9da6d4cfa737d2281
Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate: Fri, 17 Jun 2016 17:05:38 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 20 Jun 2016 11:25:50 +0200
locking/atomic, arch/m68k: Remove comment
I misread the inline asm. It uses a rare construct to provide an input
to a previously declared output to do the atomic_read().
Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Andreas Schwab <schwab@xxxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/m68k/include/asm/atomic.h | 7 -------
1 file changed, 7 deletions(-)
diff --git a/arch/m68k/include/asm/atomic.h b/arch/m68k/include/asm/atomic.h
index 3e03de7..cf4c3a7 100644
--- a/arch/m68k/include/asm/atomic.h
+++ b/arch/m68k/include/asm/atomic.h
@@ -38,13 +38,6 @@ static inline void atomic_##op(int i, atomic_t *v) \
#ifdef CONFIG_RMW_INSNS
-/*
- * Am I reading these CAS loops right in that %2 is the old value and the first
- * iteration uses an uninitialized value?
- *
- * Would it not make sense to add: tmp = atomic_read(v); to avoid this?
- */
-
#define ATOMIC_OP_RETURN(op, c_op, asm_op) \
static inline int atomic_##op##_return(int i, atomic_t *v) \
{ \
--
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