Re: [Linux-fbdev-devel] Re: [PATCH] fbdev: Fix IO access in rivafb

From: Linus Torvalds
Date: Mon Nov 08 2004 - 17:29:42 EST

On Tue, 9 Nov 2004, Antonino A. Daplas wrote:
> In big endian machines, the read*/write* accessors do a byteswap for an
> inherently little endian PCI bus. However, rivafb puts the hardwire in big
> endian register access, thus the byteswap is not needed. So for 16- and
> 32-bit access, instead of read*/write*, use __raw_read*/__raw_write* for all
> archs.

Ok, applied with some further simplifications (use "void __iomem *" and
suddenly those /2 and /4 just go away - also use __raw_xxxx for the
single-byte versions to be consistent).

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