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

From: Benjamin Herrenschmidt
Date: Sat Nov 13 2004 - 18:56:20 EST

On Sun, 2004-11-14 at 05:29 +0800, Antonino A. Daplas wrote:
> On Sunday 14 November 2004 02:00, Linus Torvalds wrote:
> > On Sat, 13 Nov 2004, Antonino A. Daplas wrote:
> > > Why not use in_be* and out_be* for __raw_read and raw_write?
> >
> > Please don't start using some stupid magic ppc-specific macros for a
> > driver that has no reason to be PPC-specific. It then only causes bugs
> > that show on one platform and not another.
> I'm not. I'm just wondering that if the other approach was taken (keep the
> hardware in little endian mode), then the write/read* macros, which are just
> wrappers for in_le*/out_le*, would have been used. Would it help fix (or
> cover up) bugs that are in PPC but not x86?

If you switch the HW to LE, I'm afraid you'll lockup when VT switching
back & forth with X ...


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