linux-kernel - [PATCH] regmap:change spinlock

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Date:	Mon, 15 Dec 2014 16:05:50 +0800
From:	"Wang, Yalin" <Yalin.Wang@...ymobile.com>
To:	"'broonie@...nel.org'" <broonie@...nel.org>,
	"'linux-driver@...gic.com'" <linux-driver@...gic.com>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>,
	"'linux@....linux.org.uk'" <linux@....linux.org.uk>
Subject: [PATCH] regmap:change spinlock_flags into the union

This patch move struct regmap.spinlock_flags into the union of
spinlock, so that we can shrink struct regmap size.

Signed-off-by: Yalin Wang <yalin.wang@...ymobile.com>
---
 drivers/base/regmap/internal.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 0da5865..8e94584 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -51,9 +51,11 @@ struct regmap_async {
 struct regmap {
 	union {
 		struct mutex mutex;
-		spinlock_t spinlock;
+		struct {
+			spinlock_t spinlock;
+			unsigned long spinlock_flags;
+		};
 	};
-	unsigned long spinlock_flags;
 	regmap_lock lock;
 	regmap_unlock unlock;
 	void *lock_arg; /* This is passed to lock/unlock functions */
-- 
2.1.3
--
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