[1/3] usb: dwc3: gadget: Check MaxPacketSize from descriptor

From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Date: 2018-07-28 01:52:41
Subsystem: designware usb3 drd ip driver, the rest, usb subsystem · Maintainers: Thinh Nguyen, Linus Torvalds, Greg Kroah-Hartman

endpoint->maxpacket is not updated after setting the
usb_set_maxpacket_limit() on endpoint enable. The MaxPacketSize can be
different than the endpoint->maxpacket_limit.

DWC3 has been consistently using MaxPacketSize from the endpoint's
descriptor, so let's keep it consistent and use the MaxPacketSize from
the endpoint's descriptor instead.

Signed-off-by: Thinh Nguyen <redacted>
---
 drivers/usb/dwc3/gadget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 69bf137aab37..032ea7d709ba 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1121,7 +1121,7 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep,
 				req->request.short_not_ok,
 				req->request.no_interrupt);
 	} else if (req->request.zero && req->request.length &&
-		   (IS_ALIGNED(req->request.length,dep->endpoint.maxpacket))) {
+		   (IS_ALIGNED(req->request.length, maxp))) {
 		struct dwc3	*dwc = dep->dwc;
 		struct dwc3_trb	*trb;
 
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