> > On Sun, Mar 09, 2008 at 01:55:15PM +0000, Joel Soete wrote:
> > > Hello Grant,
> > >
> > > Always tracking this ccio-dma bug, I figure out this stuff could be
> > > helpfull:
> > > --- a/drivers/parisc/ccio-dma.c 2008-03-09 12:55:00.000000000 +0000
> > > +++ b/drivers/parisc/ccio-dma.c 2008-03-09 12:55:21.000000000 +0000
> > > @@ -802,7 +802,7 @@
> > > * Hopefully someone figures out how to patch (NOP) the
> > > * FDC/SYNC out at boot time.
> > > */
> > > - asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr[7]));
> > > + asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr));
> >
> > BTW, once you've tested/demostrated this fixes the DMA problems on C-xxx,
> > please resend with "Signed-off-by:" line.
The existing code is clearly wrong. pdir_ptr[7] is not a pointer and
the previous statement sets it to zero to clear the valid bit. So, don't
drop this line of investigation.
Dave
--
J. David Anglin dave.anglin@xxxxxxxxxxxxxx
National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
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