Re: [alsa-devel] ALSA on MIPS platform

[Songmao Tian <tiansm@lemote.com>]

Atsushi Nemoto wrote:
> On Tue, 7 Aug 2007 10:18:04 +0400, "Dajie Tan" <jiankemeng@gmail.com> wrote:
>   
> >  static inline unsigned long virt_to_phys(volatile const void *address)
> >  {
> > -       return (unsigned long)address - PAGE_OFFSET + PHYS_OFFSET;
> > +       return ((unsigned long)address & 0x1fffffff) + PHYS_OFFSET;
> >  }
> >     
> This makes virt_to_phys() a bit slower, and more importantly, breaks
> 64-bit kernel.
>   
I have tried this way, and disassemble result show 32-bit kernel add 
only one instruction.
But I don't really insist on this patch, for it doesn't resolve some 
driver code requirement.
> ---
> Atsushi Nemoto
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