Re: Si3112 S-ATA bug preventing use of udma5.

[Denis Vlasenko]

On Saturday 24 April 2004 07:31, Benjamin Herrenschmidt wrote:
> On Sat, 2004-04-24 at 12:30, Roland Dreier wrote:
> > Finally, siimage.c does
> >
> >                 hwif->OUTW(speedt, addr);
> >
> > and speedt is a u32 -- however, as you say, the compiler should just
> > cast speedt down to a u16.  What am I missing?
>
> This is just a normal function call, there should be nothing special,
> so either you are missing something else or you are suffering from
> incorrectly compiled code... I'm no x86 expert so I can't help
> analyzing the codegen here though.

place a pair of bogus calls:

void marker(void);
....
	marker();
	hwif->OUTW(speedt, addr);
	marker();
...

and objdump -d resulting .o file.
It will be easy to find corresponding asm fragment.
--
vda

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