Subject: Re: [PATCH] use winbond libata instead of ide driver for pseries CD drives

From: Bartlomiej Zolnierkiewicz <[email-masked]>
Date: Fri, 16 Feb 2007 16:09:07 +0100

On Friday 16 February 2007 15:55, Sergei Shtylyov wrote:
> Hello.
> 
> Bartlomiej Zolnierkiewicz wrote:
> 
> >>    I'm sorry, how those 2 drivers can be equivalent?! The pata_winbond driver 
> >>is for VLB only, sl81c105 was for PCI only -- you certainly want to use 
> >>pata_sl82c105 (indeed better version of sl82c105 driver).
> 
> > I was under the impression that with your fixes these drivers
> > (sl82c105 and pata_sl82c105) are functionally equivalent.
> 
>     They're not yet equivalent. pata_sl82c105 supports all MWDMA modes, 
> sl82c105 still supports only MWDMA2.

Indeed and it seems that IDE core needs ->dma_mode to fix this.

Thanks,
Bart