On Tue, Feb 6, 2018 at 8:55 AM, Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> wrote: > > Hi, > > Ran Shalit <ranshalit@xxxxxxxxx> writes: >> Hello, >> >> I check code in: >> https://elixir.free-electrons.com/linux/v3.3/source/drivers/usb/gadget/f_mass_storage.c >> but I see no API usage of DMA, yet it is being mentioned as if it is used. > > but it is used. It's just managed by the UDC driver (dwc3, musb, > chipidea, Renesas, etc) > Just to be sure, can I assume that other usb gadget drivers are using DMA (including gadgetfs for userspace driver) ? And it is also correct for host drivers (such as camera device ) ? Thanks, Ran > -- > balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
