From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50974 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932281AbbLGMTO (ORCPT ); Mon, 7 Dec 2015 07:19:14 -0500 Subject: Patch "usb: chipidea: otg: gadget module load and unload support" has been added to the 4.2-stable tree To: B47624@freescale.com, gregkh@linuxfoundation.org, jiada_wang@mentor.com, jun.li@freescale.com, peter.chen@freescale.com Cc: , From: Date: Mon, 07 Dec 2015 00:29:50 -0800 Message-ID: <144947699062133@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: chipidea: otg: gadget module load and unload support to the 4.2-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-chipidea-otg-gadget-module-load-and-unload-support.patch and it can be found in the queue-4.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 85da852df66e5e0d3aba761b0fece7c958ff0685 Mon Sep 17 00:00:00 2001 From: Li Jun Date: Fri, 12 Dec 2014 09:11:42 +0800 Subject: usb: chipidea: otg: gadget module load and unload support From: Li Jun commit 85da852df66e5e0d3aba761b0fece7c958ff0685 upstream. This patch is to support load and unload gadget driver in full OTG mode. Signed-off-by: Li Jun Signed-off-by: Peter Chen Tested-by: Jiada Wang Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/udc.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1730,6 +1730,22 @@ static int ci_udc_start(struct usb_gadge return retval; } +static void ci_udc_stop_for_otg_fsm(struct ci_hdrc *ci) +{ + if (!ci_otg_is_fsm_mode(ci)) + return; + + mutex_lock(&ci->fsm.lock); + if (ci->fsm.otg->state == OTG_STATE_A_PERIPHERAL) { + ci->fsm.a_bidl_adis_tmout = 1; + ci_hdrc_otg_fsm_start(ci); + } else if (ci->fsm.otg->state == OTG_STATE_B_PERIPHERAL) { + ci->fsm.protocol = PROTO_UNDEF; + ci->fsm.otg->state = OTG_STATE_UNDEFINED; + } + mutex_unlock(&ci->fsm.lock); +} + /** * ci_udc_stop: unregister a gadget driver */ @@ -1754,6 +1770,7 @@ static int ci_udc_stop(struct usb_gadget ci->driver = NULL; spin_unlock_irqrestore(&ci->lock, flags); + ci_udc_stop_for_otg_fsm(ci); return 0; } Patches currently in stable-queue which might be from B47624@freescale.com are queue-4.2/usb-chipidea-otg-gadget-module-load-and-unload-support.patch