From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50292 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751835AbeBZQUB (ORCPT ); Mon, 26 Feb 2018 11:20:01 -0500 Subject: Patch "usb: dwc3: ep0: Reset TRB counter for ep0 IN" has been added to the 4.14-stable tree To: Thinh.Nguyen@synopsys.com, felipe.balbi@linux.intel.com, gregkh@linuxfoundation.org, thinhn@synopsys.com Cc: , From: Date: Mon, 26 Feb 2018 17:18:33 +0100 Message-ID: <15196619139889@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled usb: dwc3: ep0: Reset TRB counter for ep0 IN to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-dwc3-ep0-reset-trb-counter-for-ep0-in.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From f035d139ffece7b6a7b8bfb17bd0ba715ee57a04 Mon Sep 17 00:00:00 2001 From: Thinh Nguyen Date: Fri, 12 Jan 2018 18:18:27 -0800 Subject: usb: dwc3: ep0: Reset TRB counter for ep0 IN From: Thinh Nguyen commit f035d139ffece7b6a7b8bfb17bd0ba715ee57a04 upstream. DWC3 tracks TRB counter for each ep0 direction separately. In control read transfer completion handler, the driver needs to reset the TRB enqueue counter for ep0 IN direction. Currently the driver only resets the TRB counter for control OUT endpoint. Check for the data direction and properly reset the TRB counter from correct control endpoint. Cc: stable@vger.kernel.org Fixes: c2da2ff00606 ("usb: dwc3: ep0: don't use ep0in for transfers") Signed-off-by: Thinh Nguyen Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/ep0.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -884,7 +884,12 @@ static void dwc3_ep0_complete_data(struc trb++; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; trace_dwc3_complete_trb(ep0, trb); - ep0->trb_enqueue = 0; + + if (r->direction) + dwc->eps[1]->trb_enqueue = 0; + else + dwc->eps[0]->trb_enqueue = 0; + dwc->ep0_bounced = false; } Patches currently in stable-queue which might be from Thinh.Nguyen@synopsys.com are queue-4.14/usb-dwc3-ep0-reset-trb-counter-for-ep0-in.patch queue-4.14/usb-dwc3-gadget-set-maxpacket-size-for-ep0-in.patch