Re: [PATCH 2/2 resend v2] USB: host: Introduce flag to enable use of 64-bit dma_mask for ehci-platform

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On Tue, Jan 06, 2015 at 10:49:40AM -0500, Alan Stern wrote:
> On Tue, 6 Jan 2015, Andreas Herrmann wrote:
> 
> > ehci-octeon driver used a 64-bit dma_mask. With removal of ehci-octeon
> > and usage of ehci-platform ehci dma_mask is now limited to 32 bits
> > (coerced in ehci_platform_probe).
> > 
> > Provide a flag in ehci platform data to allow use of 64 bits for
> > dma_mask.
> > 
> > Cc: David Daney <david.daney@xxxxxxxxxx>
> > Cc: Alex Smith <alex.smith@xxxxxxxxxx>
> > Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Andreas Herrmann <andreas.herrmann@xxxxxxxxxxxxxxxxxx>
> > Tested-by: Aaro Koskinen <aaro.koskinen@xxxxxx>
> 
> Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> 
> Is something like this also needed for ohci-platform?

No, I don't think so.

> Or are all OHCI implementations restricted to 32-bit DMA masks?

AFAIK OHCI supports only 32-bit memory addressing.


> Alan Stern

Andreas




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