The patch below does not apply to the 3.3-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.
thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 566ccdda07dc5898272b6fbad9c616fc44be305a Mon Sep 17 00:00:00 2001 From: Moiz Sonasath <[email protected]> Date: Wed, 14 Mar 2012 00:44:56 -0500 Subject: [PATCH] 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: [email protected] Signed-off-by: Moiz Sonasath <[email protected]> Signed-off-by: Partha Basak <[email protected]> Signed-off-by: Felipe Balbi <[email protected]> diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 25910e2..a40d3bb 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -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 { -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
