On Wed, Apr 17 2002, Jens Axboe wrote:
> On Wed, Apr 17 2002, Martin Dalecki wrote:
> > Mikael Pettersson wrote:
> > >I have a 486 box which ran 2.5.7 fine, but 2.5.8 oopses during
> > >boot at the BUG_ON() in drivers/ide/ide-disk.c, line 360:
> > >
> > > if (drive->using_tcq) {
> > > int tag = ide_get_tag(drive);
> > >
> > > BUG_ON(drive->tcq->active_tag != -1);
> >
> > OK it could be that the tca goesn't get allocated if there
> > was no chipset selected. Lets have a look...
>
> Add a drive->using_dma check to ide_dma_queued_on in ide-tcq.c, it needs
> to look like this:
>
> ide_tcq_dmaproc()
> {
>
> ...
>
> case ide_dma_queued_off:
> enable_tcq = 0;
> case ide_dma_queued_on:
> if (!drive->using_dma)
> return 1;
> return ide_enable_queued(drive, enable_tcq);
> default:
> break;
> }
>
> that should fix it.
Should only be done if 'enable_tcq == 1' of course, and we also need to
switch off tcq when dma is being disabled. 4th patch set against 2.5.8.
Note to Martin: I'll merge with IDE-XX later today.
-- Jens Axboe
This archive was generated by hypermail 2b29 : Tue Apr 23 2002 - 22:00:18 EST