linux-kernel - [PATCH 1/2] gpio-pch: cleanup _

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Message-ID: <4F12AB38.5040009@freemail.hu>
Date:	Sun, 15 Jan 2012 11:32:24 +0100
From:	Németh Márton <nm127@...email.hu>
To:	Grant Likely <grant.likely@...retlab.ca>,
	Linus Walleij <linus.walleij@...ricsson.com>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] gpio-pch: cleanup __iomem annotation usage

From: Márton Németh <nm127@...email.hu>

The __iomem annotation is to be used together with pointers used
as iowrite32() parameter. For more details see [1] and [2].

This patch will remove the following sparse warnings ("make C=1"):
 * warning: incorrect type in assignment (different address spaces)
 * warning: incorrect type in argument 1 (different address spaces)
 * warning: incorrect type in argument 2 (different address spaces)

References:
[1] A new I/O memory access mechanism (Sep 15, 2004)
    http://lwn.net/Articles/102232/

[2] Being more anal about iospace accesses (Sep 15, 2004)
    http://lwn.net/Articles/102240/

Signed-off-by: Márton Németh <nm127@...email.hu>
---
 drivers/gpio/gpio-pch.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c
index f060329..9061b55 100644
--- a/drivers/gpio/gpio-pch.c
+++ b/drivers/gpio/gpio-pch.c
@@ -231,7 +231,7 @@ static void pch_gpio_setup(struct pch_gpio *chip)
 static int pch_irq_type(struct irq_data *d, unsigned int type)
 {
 	u32 im;
-	u32 *im_reg;
+	u32 __iomem *im_reg;
 	u32 ien;
 	u32 im_pos;
 	int ch;
-- 
1.7.2.5

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