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| author | Peter Zijlstra <peterz@infradead.org> | 2016-08-26 15:06:04 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-09-22 14:47:02 +0200 |
| commit | 9bf6ffdabdd6e70a0b69d032a0aff091afe1773e (patch) | |
| tree | db07f7aae991eecdd537a1854324c0d5edd29048 /arch | |
| parent | 7d1e042314619115153a0f6f06e4552c09a50e13 (diff) | |
| download | lwn-9bf6ffdabdd6e70a0b69d032a0aff091afe1773e.tar.gz lwn-9bf6ffdabdd6e70a0b69d032a0aff091afe1773e.zip | |
locking/atomic, arch/sh: Fix ATOMIC_FETCH_OP()
We cannot use the "z" constraint twice, since its a single register
(r0). Change the one not used by movli.l/movco.l to "r".
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Tested-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/include/asm/atomic-llsc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/include/asm/atomic-llsc.h b/arch/sh/include/asm/atomic-llsc.h index caea2c45f6c2..1d159ce50f5a 100644 --- a/arch/sh/include/asm/atomic-llsc.h +++ b/arch/sh/include/asm/atomic-llsc.h @@ -60,7 +60,7 @@ static inline int atomic_fetch_##op(int i, atomic_t *v) \ " movco.l %0, @%3 \n" \ " bf 1b \n" \ " synco \n" \ - : "=&z" (temp), "=&z" (res) \ + : "=&z" (temp), "=&r" (res) \ : "r" (i), "r" (&v->counter) \ : "t"); \ \ |