Since the host and gadget can't agree with transfer length before each transfer, but they agree with max packet size for each endpoint, we use max packet size to format data pattern. Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> --- drivers/usb/gadget/function/f_sourcesink.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c index cbfaf86..21dced2 100644 --- a/drivers/usb/gadget/function/f_sourcesink.c +++ b/drivers/usb/gadget/function/f_sourcesink.c @@ -510,7 +510,8 @@ static int check_read_data(struct f_sourcesink *ss, struct usb_request *req) * stutter for any reason, including buffer duplication...) */ case 1: - if (*buf == (u8)(i % 63)) + if (*buf == (u8)((i % ss->out_ep->desc->wMaxPacketSize) + % 63)) continue; break; } @@ -532,7 +533,7 @@ static void reinit_write_data(struct usb_ep *ep, struct usb_request *req) break; case 1: for (i = 0; i < req->length; i++) - *buf++ = (u8) (i % 63); + *buf++ = (u8) ((i % ep->desc->wMaxPacketSize) % 63); break; case 2: break; -- 1.9.1 -- 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
