linux-kernel - [PATCH] PCI:pciehp:remove unnecessary volatile in struct controller

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Date:	Sun, 13 Jul 2008 18:46:42 +0800
From:	tom.leiming@...il.com
To:	jbarnes@...tuousgeek.org, kristen.c.accardi@...el.com
Cc:	linux-pci@...ey.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org,
	Ming Lei <tom.leiming@...il.com>
Subject: [PATCH] PCI:pciehp:remove unnecessary volatile in struct controller

From: Ming Lei <tom.leiming@...il.com>

Proper memory barriers have been added to order accesses
to ->cmd_busy, so volatile declaration for cmd_busy can
be removed.

Signed-off-by: Ming Lei <tom.leiming@...il.com>
---
 drivers/pci/hotplug/pciehp.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index 79c9dda..5e2becd 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -96,7 +96,7 @@ struct controller {
 	u32 slot_cap;
 	u8 cap_base;
 	struct timer_list poll_timer;
-	volatile int cmd_busy;
+	int cmd_busy;
 	unsigned int no_cmd_complete:1;
 };
 
-- 
1.5.6.rc2.45.gdc92c

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