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 <alexeis@xxxxxxxxxxxx> > --- > 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); Regards, -Bin. -- 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
