Re: VIA52CXXX problem (2.2.15/16pre7)

From: Bartlomiej Zolnierkiewicz (dake@staszic.waw.pl)
Date: Fri Jun 02 2000 - 13:31:14 EST

On Fri, 2 Jun 2000, Nils Rennebarth wrote:

> On Fri, Jun 02, 2000 at 09:10:29AM -0600, James Bourne wrote:
> > Hi,
> > I'm currently building a system using an FIC SD-11 motherboard (onboard
> > VIA82C686A) and Quantum LM drives plus a PDC20262 card (currently one, soon
> > to be two).
> >
> > Problem is this:
> > On boot everything goes smoothly, only if I set the drives on the VIA
> > controller to UDMA 66 mode2 I get
> > hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hdb: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hdb: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hda: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hda: dma_intr: error=0x84 { DriveStatusError BadCRC }
> > hda: DMA disabled
> > hdb: DMA disabled
> >
> > Once DMA is disabled the drives pickup ok and everything works.
> Same Problem here. The same drive in 2.4.0test1 works well and stable
> in UDMA mode 2

If so you may try attached patch. It's backport of most significant
change in via driver from 2.2.X to 2.4.X.
It *may* fix the problem, but don't have to (it probably will if you have
idebus!=33/37).

Patch is against kernel 2.2.16-pre7 with IDE patch applied.

>
> Nils
>
> --
> Plug-and-Play is really nice, unfortunately it only works 50% of the time.
> To be specific the "Plug" almost always works. --unknown source
> 

--
Bartlomiej Zolnierkiewicz <bkz>

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