From: Michael Grzeschik Date: Mon, 4 Jul 2022 14:18:12 +0000 (+0200) Subject: usb: dwc3: gadget: fix high speed multiplier setting X-Git-Tag: block-6.0-2022-08-12~24^2~77 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=8affe37c525d800a2628c4ecfaed13b77dc5634a;p=linux-2.6-block.git usb: dwc3: gadget: fix high speed multiplier setting For High-Speed Transfers the prepare_one_trb function is calculating the multiplier setting for the trb based on the length parameter of the trb currently prepared. This assumption is wrong. For trbs with a sg list, the length of the actual request has to be taken instead. Fixes: 40d829fb2ec6 ("usb: dwc3: gadget: Correct ISOC DATA PIDs for short packets") Cc: stable Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20220704141812.1532306-3-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index dcd8fc209ccd..4366c45c28cf 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1265,10 +1265,10 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, unsigned int mult = 2; unsigned int maxp = usb_endpoint_maxp(ep->desc); - if (trb_length <= (2 * maxp)) + if (req->request.length <= (2 * maxp)) mult--; - if (trb_length <= maxp) + if (req->request.length <= maxp) mult--; trb->size |= DWC3_TRB_SIZE_PCM1(mult);