Re: [RFC][PATCH] move dma_mask into struct device

[Arnd Bergmann <arndb@de.ibm.com>]

J.E.J. Bottomley [James.Bottomley@steeleye.com] wrote:

> Attached is a patch which moves dma_mask into struct device and cleans up the 
> scsi mid-layer to use it (instead of using struct pci_dev).  The advantage to 
> doing this is probably most apparent on non-pci bus architectures where 
> currently you have to construct a fake pci_dev just so you can get the bounce 
> buffers to work correctly.

That does not sound like the right way to me. If you need to have the dma_mask
for the Scsi_Host, you should store it in Scsi_Host itself. A struct device
must never know about obscure architecture specific stuff like dma.

	Arnd <><