Re: [PATCH] ide_cs w/TCQ
From: Bartlomiej Zolnierkiewicz
Date: Thu Sep 04 2003 - 16:09:37 EST
On Thursday 04 of September 2003 23:27, MAtias Alejo Garcia wrote:
> Hi Bart,
Hi,
> I reported I problem (Unable to handle kernel NULL pointer...) when
> inserting a CF card in a PCMCIA adapter in 2.6.0test1. The problem
> continues in test4 (log below, when inserting a card).
>
> The problem only is present when BLK_DEV_TCQ_DEFAULT is enabled. It
> seems that ide_cs (or ide, don't know) does not correctly initialize
> hwif->ide_dma_queued_on() ...I don't know how this should be fixed if
> the driver doesn't use DMA:
Yes, thanks!
> 1) Not calling ide_dma_queued_on
> or
> 2) Initializind ide_dma_queued_on to a dummy function
>
> I tried 1) and it works...
3) initialize ide_dma_queued_on to __ide_dma_queued_on()
because drive->using_dma is checked inside __ide_dma_queud_on,
but that looks stupid to assign it in DMA-unaware driver :-).
> Here is the patch...be gentle is my first contribution :-)
>
> Thanks!
> matias
--bartlomiej
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