linux-kernel - Re: [PATCH RFC 3/5] pci: add pci_iomap

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Date:	Thu, 11 Dec 2014 23:27:54 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	virtualization@...ts.linux-foundation.org,
	cornelia.huck@...ibm.com, linux-arch@...r.kernel.org
Subject: Re: [PATCH RFC 3/5] pci: add pci_iomap_range

On Thursday 11 December 2014 21:37:34 Michael S. Tsirkin wrote:
>         if (flags & IORESOURCE_MEM) {
> -               if (flags & IORESOURCE_CACHEABLE)
> +               if (!force_nocache && (flags & IORESOURCE_CACHEABLE))
>                         return ioremap(start, len);
>                 return ioremap_nocache(start, len);
>         }
> 

ioremap is the same as ioremap_nocache, so this doesn't really make any
sense. IORESOURCE_CACHEABLE is practically only set for ROM bars, which
we rarely map.

	Arnd
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