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Commit 566ccdda authored by Moiz Sonasath's avatar Moiz Sonasath Committed by Felipe Balbi
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usb: dwc3: ep0: Handle requests greater than wMaxPacketSize 



To allow ep0 out transfers of upto bounce buffer size
instead of maxpacketsize, use the transfer size as multiple
of ep0 maxpacket size.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarMoiz Sonasath <m-sonasath@ti.com>
Signed-off-by: default avatarPartha Basak <p-basak2@ti.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 6d258a4c

drivers/usb/dwc3/ep0.c

+5 −1
Original line number Diff line number Diff line
@@ -559,8 +559,12 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, 
	length = trb->size & DWC3_TRB_SIZE_MASK;



	if (dwc->ep0_bounced) {

		unsigned transfer_size = ur->length;

		unsigned maxp = ep0->endpoint.maxpacket;



		transfer_size += (maxp - (transfer_size % maxp));

		transferred = min_t(u32, ur->length,

				ep0->endpoint.maxpacket - length);

				transfer_size - length);

		memcpy(ur->buf, dwc->ep0_bounce, transferred);

		dwc->ep0_bounced = false;

	} else {