Re: [PATCH] ide: New libata driver for OCTEON SOC Compact Flash interface.

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello, I wrote:

> > > +     * stoppng and restarting the DMA, we'll let the hardware do 
> > > it. If the
> >   stopping
> >
> > > +     * DMA is really stopped early due to an error condition, a later
>   I'm not sure which error condition is meant here: ERR=1 in the 
> status register, some internal DMA error, both?
> > > +     * timeout will force us to stop.
> >   Sigh... So any command error will result in a timeout. I wonder 
> > what hardware genius decided that CF doesn't need an IRQ...
  Ah, I forgot thet libata should be supporting polling mode, so should 
handle ERR=1 case. In this case the comment about the timeout 
contradicts your words about an interrupt being generated on DMA error.
>   So, Octeon DMA can actually generate an error interrupt?
MBR, Sergei