linux-kernel - [RFC PATCH 03/13] driver core: firmware loader: remove unnecessary wmb()

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Message-Id: <1343149213-10160-4-git-send-email-ming.lei@canonical.com>
Date:	Wed, 25 Jul 2012 01:00:03 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Borislav Petkov <borislav.petkov@....com>,
	linux-kernel@...r.kernel.org, Ming Lei <ming.lei@...onical.com>
Subject: [RFC PATCH 03/13] driver core: firmware loader: remove unnecessary wmb()

The wmb() inside fw_load_abort is not necessary, since
complete() and wait_on_completion() has implied one pair
of memory barrier.

Also wmb() isn't a correct usage, so just remove it.

Signed-off-by: Ming Lei <ming.lei@...onical.com>
---
 drivers/base/firmware_class.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 6e96b8c..16239fd 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -112,7 +112,6 @@ static struct firmware_priv *to_firmware_priv(struct device *dev)
 static void fw_load_abort(struct firmware_priv *fw_priv)
 {
 	set_bit(FW_STATUS_ABORT, &fw_priv->status);
-	wmb();
 	complete(&fw_priv->completion);
 }
 
-- 
1.7.9.5

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