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usb: dwc3: ep0: Handle requests greater than wMaxPacketSize

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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: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Partha Basak <p-basak2@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Moiz Sonasath 2012-03-14 00:44:56 -05:00 committed by Felipe Balbi
parent 6d258a4c42
commit 566ccdda07
1 changed files with 5 additions and 1 deletions
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6
drivers/usb/dwc3/ep0.c
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@ -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 {