Re: [PATCH] ide: disable dma for transcend CF

[Matthew Garrett]

Kirill Smelkov <kirr@xxxxxxxxxx> wrote:

> but if dma is turned on i get a lot of errors::
> 
>     hdc: dma_timer_epiry: dma_status == 0x21
>     hdc: DMA timeout error
>     hdc: dma timeout error: status=0x58 { DriveReady SeekComplete DataRequest }
>     ide: failed opcode was: unknown

Are you sure that your CF adapter has the DMA lines hooked up? See 
http://lkml.org/lkml/2006/5/23/198 for instance - IIRC, the kernel has 
no way of telling whether the failure is because the card supports DMA 
and the adapter doesn't, or whether the card is lying. If it's the 
former, the card shouldn't be blacklisted.

-- 
Matthew Garrett | mjg59-chiark.mail.linux-rutgers.kernel@xxxxxxxxxxxxx
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