On Thu, Jan 16, 2020 at 02:23:45PM +0530, Vignesh Raghavendra wrote:
> Subsystems such as USB expect dma_map_single() and dma_unmap_single() to
> do dcache flush/invalidate operations as required. For example, see
> see drivers/usb/gadget/udc/udc-core.c::usb_gadget_map_request().
> Currently drive
Subsystems such as USB expect dma_map_single() and dma_unmap_single() to
do dcache flush/invalidate operations as required. For example, see
see drivers/usb/gadget/udc/udc-core.c::usb_gadget_map_request().
Currently drivers do this locally, (see drivers/usb/dwc3/ep0.c,
drivers/mtd/nand/raw/denali.c
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