linux-kernel - RE: [PATCH 11/12] unicore32 machine related files: ps2 driver

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Date:	Tue, 22 Feb 2011 22:26:26 +0800
From:	"Guan Xuetao" <gxt@...c.pku.edu.cn>
To:	"'Arnd Bergmann'" <arnd@...db.de>
Cc:	<dmitry.torokhov@...il.com>, <linux-kernel@...r.kernel.org>,
	<linux-arch@...r.kernel.org>, "'Greg KH'" <greg@...ah.com>
Subject: RE: [PATCH 11/12] unicore32 machine related files: ps2 driver



> -----Original Message-----
> From: Arnd Bergmann [mailto:arnd@...db.de]
> Sent: Friday, February 18, 2011 6:33 PM
> To: Guan Xuetao
> Cc: dmitry.torokhov@...il.com; linux-kernel@...r.kernel.org; linux-arch@...r.kernel.org; 'Greg KH'
> Subject: Re: [PATCH 11/12] unicore32 machine related files: ps2 driver
> 
> On Friday 18 February 2011 11:28:45 Guan Xuetao wrote:
> >   * Register numbers.
> >   */
> > -#define I8042_COMMAND_REG      ((unsigned long)&PS2_COMMAND)
> > -#define I8042_STATUS_REG       ((unsigned long)&PS2_STATUS)
> > -#define I8042_DATA_REG         ((unsigned long)&PS2_DATA)
> > +#define I8042_COMMAND_REG      ((volatile void __iomem *)&PS2_COMMAND)
> > +#define I8042_STATUS_REG       ((volatile void __iomem *)&PS2_STATUS)
> > +#define I8042_DATA_REG         ((volatile void __iomem *)&PS2_DATA)
> > +
> > +#define I8042_REGION_START     (resource_size_t)(&PS2_DATA)
> > +#define I8042_REGION_SIZE      (resource_size_t)(16)
> 
> It would be better to remove the cast and make the PS2_COMMAND
> etc macros have the correct type. Aside from this, the change
> looks good.
With the patch for __REG in unicore32, following patch could be applied:
drivers/input/serio/i8042-unicore32io.h |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/input/serio/i8042-unicore32io.h b/drivers/input/serio/i8042-unicore32io.h
index 2cdd872..9350843 100644
--- a/drivers/input/serio/i8042-unicore32io.h
+++ b/drivers/input/serio/i8042-unicore32io.h
@@ -29,11 +29,11 @@
 /*
  * Register numbers.
  */
-#define I8042_COMMAND_REG	((volatile void __iomem *)&PS2_COMMAND)
-#define I8042_STATUS_REG	((volatile void __iomem *)&PS2_STATUS)
-#define I8042_DATA_REG		((volatile void __iomem *)&PS2_DATA)
+#define I8042_COMMAND_REG	PS2_COMMAND
+#define I8042_STATUS_REG	PS2_STATUS
+#define I8042_DATA_REG		PS2_DATA
 
-#define I8042_REGION_START	(resource_size_t)(&PS2_DATA)
+#define I8042_REGION_START	(resource_size_t)(PS2_DATA)
 #define I8042_REGION_SIZE	(resource_size_t)(16)
 
 static inline int i8042_read_data(void)

> 
> 	Arnd
Thanks & Regards.

Guan Xuetao

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