From ca3df3468eec87f6374662f7de425bc44c3810c1 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Thu, 24 Sep 2020 01:21:18 -0700 Subject: [PATCH] usb: dwc3: gadget: Check MPS of the request length When preparing for SG, not all the entries are prepared at once. When resume, don't use the remaining request length to calculate for MPS alignment. Use the entire request->length to do that. Cc: stable@vger.kernel.org Fixes: 5d187c0454ef ("usb: dwc3: gadget: Don't setup more than requested") Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index b2dfb3a..7e1909d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1098,6 +1098,8 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep, struct scatterlist *s; int i; unsigned int length = req->request.length; + unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc); + unsigned int rem = length % maxp; unsigned int remaining = req->request.num_mapped_sgs - req->num_queued_sgs; @@ -1109,8 +1111,6 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep, length -= sg_dma_len(s); for_each_sg(sg, s, remaining, i) { - unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc); - unsigned int rem = length % maxp; unsigned int trb_length; unsigned int chain = true; -- 2.7.4