linux-kernel - Re: [PATCH] /drivers/char sx.c ioremap -> pci

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Date:	Fri, 24 Aug 2007 22:03:42 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Jiri Slaby <jirislaby@...il.com>, postfail@...hmail.com,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] /drivers/char sx.c ioremap -> pci_ioremap api

Alan Cox napsal(a):
> ase, 0x80);
>> remove also the hwbase var.
>>
>>> +	rebase = pci_iomap(pdev, 0, 0x80);
>>>   	t = readl(rebase + CNTRL_REG_OFFSET);
> 
> Switch to ioread* if you are using the iomap interface. Its not a trivial

Why, if you know it's surely a mem region (and thus you rely on it and do
ioremap)? There are many places in the kernel, where this approach is used, e.g.
libata piix.

> conversion and its slower and bulkier - the original ioremap was much
> better

at least get rid of the reading the hwbase address from pci conf space, use
pci_resource_start instead.

-- 
Jiri Slaby (jirislaby@...il.com)
Faculty of Informatics, Masaryk University
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