[PATCH 04/10] x86, mce: use do-while in mce_log

[Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>]

No changes in logic.

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
---
 arch/x86/kernel/cpu/mcheck/mce.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 9e8eabd..5f88ada 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -134,7 +134,8 @@ void mce_log(struct mce *mce)
 
 	mce->finished = 0;
 	wmb();
-	for (;;) {
+
+	do {
 		entry = rcu_dereference(mcelog.next);
 		for (;;) {
 			/*
@@ -156,14 +157,13 @@ void mce_log(struct mce *mce)
 		}
 		smp_rmb();
 		next = entry + 1;
-		if (cmpxchg(&mcelog.next, entry, next) == entry)
-			break;
-	}
+	} while (cmpxchg(&mcelog.next, entry, next) != entry);
+
 	memcpy(mcelog.entry + entry, mce, sizeof(struct mce));
+
 	wmb();
 	mcelog.entry[entry].finished = 1;
 	wmb();
-
 	mce->finished = 1;
 	set_bit(0, &mce_need_notify);
 }
-- 
1.6.4.3