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

[Kirill Smelkov <kirr@mns.spb.ru>]

<Sorry, Cyrillic letters were blocked on linux-ide>

Matthew Garrett 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.

No, I'm not sure.

My HW is PCISA-C800EVN-1G industrial MB (VT82C686B chipset) with integrated CF adapter.
The adapter seems to have all pins soldered.

I don't have another CF with DMA capability, so I can't check who creates the problem  --
the card or the adapter.

Let's see if someone have similar motherboard & CF with dma capabilities.

-- 
	Kirill