On Thu, Aug 15, 2019 at 08:10:49AM -0600, shuah wrote: > On 8/15/19 7:23 AM, Greg KH wrote: > > On Wed, Aug 14, 2019 at 06:19:51AM -0700, Christoph Hellwig wrote: > > > FYI, I think my > > > > > > "usb: add a HCD_DMA flag instead of guestimating DMA capabilities" > > > > > > is the proper core fix for what your patch 1 works around, as the USB > > > core should not assume DMA capabilities based on the presence of a DMA > > > mask. > > > > I agree. Let's wait for Christoph's series to be applied before taking > > this one. > > > > Great. Thanks you both looking at these. Makes sense.
Ok. Then I will drop the patch 1 and leave vhci flags without including the HCD_DMA flag to skip dma mapping. BTW, in my patch 2, I set URB_DMA_MAP_SG flag in vhci_map_urb_for_dma() of patch 1 to tell the server to use SG. I will fix it by setting URB_DMA_MAP_SG flag in other place and resend v6. Is it ok? Regards Suwan Kim