On Thu, Aug 02, 2018 at 11:14:32AM -0500, Bin Liu wrote: > Hi, > > On Thu, Jul 26, 2018 at 12:52:57PM +0000, Alexey Spirkov wrote: > > dma_mapping_error function unable to works in PowerPC arch > > when MUSB do not use DMA (illegal memory access). Proposed > > patch replace its usage to usual define for checking DMA mapping. > > > > Signed-off-by: Alexey Spirkov <alex...@astrosoft.ru> > > --- > > drivers/usb/musb/musb_gadget.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c > > index eae8b1b..3bc7c25 100644 > > --- a/drivers/usb/musb/musb_gadget.c > > +++ b/drivers/usb/musb/musb_gadget.c > > @@ -140,7 +140,7 @@ __acquires(ep->musb->lock) > > ep->busy = 1; > > spin_unlock(&musb->lock); > > > > - if (!dma_mapping_error(&musb->g.dev, request->dma)) > > + if (req && is_buffer_mapped(req)) > > unmap_dma_buffer() checks for is_buffer_mapped(), so this line can be > dropped. > > > unmap_dma_buffer(req, musb); > > > > trace_musb_req_gb(req);
Please also fix the patch subject to "usb: musb: gadget: ..." in your v2. I prefer "usb: musb: gadget: fix illegal dma address check in non-DMA mode" Regards, -Bin. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
