Hi, On 15.08.2017 12:49, Felipe Balbi wrote: > Dmitry Osipenko <digetx@xxxxxxxxx> writes: >> This quirk is required to make USB Ethernet gadget working with HW that >> can't cope with unaligned DMA. For some reason only f_ncm handles that >> quirk, let's handle it in the rest of the network models. All models have >> been tested with a ChipIdea UDC driver on NVIDIA Tegra20 SoC that require >> DMA to be aligned. >> >> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> >> --- >> drivers/usb/gadget/function/f_ecm.c | 7 +++++++ >> drivers/usb/gadget/function/f_eem.c | 5 +++++ >> drivers/usb/gadget/function/f_rndis.c | 4 ++++ >> 3 files changed, 16 insertions(+) >> >> diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c >> index 4c488d15b6f6..1d198055fd74 100644 >> --- a/drivers/usb/gadget/function/f_ecm.c >> +++ b/drivers/usb/gadget/function/f_ecm.c >> @@ -584,6 +584,13 @@ static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) >> */ >> ecm->port.is_zlp_ok = >> gadget_is_zlp_supported(cdev->gadget); >> + >> + /* Setup DMA alignment workaround for UDC's that >> + * need it. >> + */ >> + ecm->port.no_skb_reserve = >> + gadget_avoids_skb_reserve(cdev->gadget); > > looks like the quirk should be moved to u_ether.c instead. > Indeed, thank you very much for the suggestion. I'll prepare a new revision of the patch. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
