On Thu, May 15, 2014 at 04:17:44PM +0100, Liviu Dudau wrote: > On Thu, May 15, 2014 at 03:11:48PM +0100, Alan Stern wrote: > > On Wed, 14 May 2014, Mark Brown wrote: > > Did you folks tested this for all sorts of host controllers? I have no > > way to verify that it works, and last I heard, many (or even most) > > controllers don't work right with 64-bit DMA. > I have tested it with a host controller that is capable of 64-bit DMA and > without this change it doesn't work. At the moment it is the only known > USB host controller enabled for arm64. And 64-bit DMA works fine on arm64. We should probably conditionalise the device configuration on dma_set_mask() succeeding - any device that can't handle 64 bit DMA should be set up to constrain things appropriately.
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