From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47348 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754035AbdJILdA (ORCPT ); Mon, 9 Oct 2017 07:33:00 -0400 Subject: Patch "usb: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe()" has been added to the 4.9-stable tree To: yoshihiro.shimoda.uh@renesas.com, felipe.balbi@linux.intel.com, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 09 Oct 2017 13:32:21 +0200 Message-ID: <1507548741222226@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: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe() to the 4.9-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-gadget-udc-renesas_usb3-fix-return-value-of-usb3_write_pipe.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 447b8a01b84f048d93d43bfe1fcaa4fcc56595cc Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 25 Sep 2017 17:01:25 +0900 Subject: usb: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe() From: Yoshihiro Shimoda commit 447b8a01b84f048d93d43bfe1fcaa4fcc56595cc upstream. This patch fixes an issue that this driver cannot go status stage in control read when the req.zero is set to 1 and the len in usb3_write_pipe() is set to 0. Otherwise, if we use g_ncm driver, usb enumeration takes long time (5 seconds or more). Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller") Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/renesas_usb3.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -879,7 +879,7 @@ static int usb3_write_pipe(struct renesa usb3_ep->ep.maxpacket); u8 *buf = usb3_req->req.buf + usb3_req->req.actual; u32 tmp = 0; - bool is_last; + bool is_last = !len ? true : false; if (usb3_wait_pipe_status(usb3_ep, PX_STA_BUFSTS) < 0) return -EBUSY; @@ -900,7 +900,8 @@ static int usb3_write_pipe(struct renesa usb3_write(usb3, tmp, fifo_reg); } - is_last = usb3_is_transfer_complete(usb3_ep, usb3_req); + if (!is_last) + is_last = usb3_is_transfer_complete(usb3_ep, usb3_req); /* Send the data */ usb3_set_px_con_send(usb3_ep, len, is_last); Patches currently in stable-queue which might be from yoshihiro.shimoda.uh@renesas.com are queue-4.9/usb-gadget-udc-renesas_usb3-fix-return-value-of-usb3_write_pipe.patch queue-4.9/usb-gadget-udc-renesas_usb3-fix-pn_rammap.pn_mpkt-value.patch queue-4.9/usb-renesas_usbhs-fix-usbhsf_fifo_clear-for-rx-direction.patch queue-4.9/usb-gadget-udc-renesas_usb3-fix-for-no-data-control-transfer.patch queue-4.9/usb-renesas_usbhs-fix-the-bclr-setting-condition-for-non-dcp-pipe.patch