linux-kernel - Re: lib/iomap.c mmio_{in,out}s* vs. __raw

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Message-Id: <1162699255.28571.150.camel@localhost.localdomain>
Date:	Sun, 05 Nov 2006 15:00:55 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Linus Torvalds <torvalds@...l.org>
Cc:	Russell King <rmk+lkml@....linux.org.uk>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Jeff Garzik <jgarzik@...ox.com>, Andrew Morton <akpm@...l.org>,
	"David S. Miller" <davem@...emloft.net>,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: lib/iomap.c mmio_{in,out}s* vs. __raw_* accessors

On Sat, 2006-11-04 at 19:46 -0800, Linus Torvalds wrote:
> 
> On Sun, 5 Nov 2006, Benjamin Herrenschmidt wrote:
> >
> > Make the generic lib/iomap.c use arch provided MMIO accessors when
> > available for big endian and repeat operations. Also while at it,
> > fix the *_be version which are currently broken for PIO
> 
> Just rip the _be versions out, methinks.

At least one user:

./drivers/scsi/53c700.h:        __u32 value = bEBus ? ioread32be(hostdata->base + reg) :
./drivers/scsi/53c700.h:        bEBus ? iowrite32be(value, hostdata->base + reg):

Should I make it use explicit swab32 instead ?

Ben.


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