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usb: s3c-otg: Fix short packet for request size > ep.maxpacket 

Request size can be greater than ep.packet and still end in a
short packet. We need to tackle this case as end of transfer
(if short_not_ok is not set) as indicated in USB 2.0 Specification [1],
else we get stuck up on certain protocols like fastboot.

[1] - USB2.0 Specification, Section 5.3.2 Pipes

Reported-by: Steve Rae <steve.rae@broadcom.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Steve Rae <steve.rae@broadcom.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
utp
Roger Quadros 2016-04-19 15:20:39 +03:00 committed by Marek Vasut
parent ac484c5a6a
commit 842769ea51
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
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@ -229,7 +229,7 @@ static void complete_rx(struct dwc2_udc *dev, u8 ep_num)
ROUND(xfer_size, CONFIG_SYS_CACHELINE_SIZE));
req->req.actual += min(xfer_size, req->req.length - req->req.actual);
is_short = (xfer_size < ep->ep.maxpacket);
is_short = !!(xfer_size % ep->ep.maxpacket);
debug_cond(DEBUG_OUT_EP != 0,
"%s: RX DMA done : ep = %d, rx bytes = %d/%d, "