Re: isa_memcpy_fromio

[Stephen Clark <Stephen.Clark@seclark.us>]

Randy.Dunlap wrote:

> On Sun, 02 Jul 2006 11:04:31 +0100 Alan Cox wrote:
>
>  
>
> > Ar Sad, 2006-07-01 am 22:43 -0400, ysgrifennodd Stephen Clark:
> >    
> >
> > > Hello,
> > >
> > > what has isa_memcpy_fromio() changed to in kernel 2.6.17 from 2.6.16
> > >      
> > It was always meant as a transition interface (although it survived
> > incredibly long). All code that uses the ioremap is unaffected: ie
> >
> > 	foo = ioremap(isa_addr, len);
> > 	memcpy_fromio(foo + bar, buf, len2)
> >    
>
> Stephen,
> There were only 3 drivers in 2.6.16 that used isa_memcpy_fromio().
> You can look at how they were changed for 2.6.17.
>
> drivers/net/hp100.c and hp-plus.c
> drivers/scsi/g_NCR5380.c
>
> ---
> ~Randy
>
>  
Thanks to everyone who replied - I am using a module from source forge, 
on my hp laptop,
called omnibook. It allows me to turn off the back light on my n5430. 
Below is the
function that uses isa_memcpy_fromio().

static int __init dmi_iterate(void (*decode)(struct dmi_header *))
{
   u8 buf[15];
   u32 fp=0xF0000;

#ifdef CONFIG_SIMNOW
   /*
    *      Skip on x86/64 with simnow. Will eventually go away
    *      If you see this ifdef in 2.6pre mail me !
    */
   return -1;
#endif

   while( fp < 0xFFFFF)
   {
       isa_memcpy_fromio(buf, fp, 15);
       if(memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf))
       {
           u16 num=buf[13]<<8|buf[12];
           u16 len=buf[7]<<8|buf[6];
           u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];

           if(dmi_table(base,len,num,decode)==0)
               return 0;
       }
       fp+=16;
   }
   return -1;
}

Would someone recommend how this should be changed?

Thanks,
Steve

--

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)



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