From patchwork Thu Jun 9 07:42:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 580574 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB6EFC433EF for ; Thu, 9 Jun 2022 07:42:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239555AbiFIHmn (ORCPT ); Thu, 9 Jun 2022 03:42:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233962AbiFIHmm (ORCPT ); Thu, 9 Jun 2022 03:42:42 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4FD21D320; Thu, 9 Jun 2022 00:42:40 -0700 (PDT) X-UUID: f2c8674f1de34f6e9c92c078e0b700c4-20220609 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5, REQID:60d5966c-da47-45ec-a248-1bc7c14b60c7, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Release_Ham,ACT ION:release,TS:100 X-CID-INFO: VERSION:1.1.5, REQID:60d5966c-da47-45ec-a248-1bc7c14b60c7, OB:0, LOB: 0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Spam_GS981B3D,ACT ION:quarantine,TS:100 X-CID-META: VersionHash:2a19b09, CLOUDID:b9f4c37e-c8dc-403a-96e8-6237210dceee, C OID:71b688f0786c,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:1,File:nil,QS:0,BEC:nil X-UUID: f2c8674f1de34f6e9c92c078e0b700c4-20220609 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 853285066; Thu, 09 Jun 2022 15:42:35 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 9 Jun 2022 15:42:35 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 9 Jun 2022 15:42:34 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman CC: Chunfeng Yun , Matthias Brugger , , , , , Eddie Hung Subject: [PATCH 1/3] usb: mtu3: sync interrupt before unbind the udc Date: Thu, 9 Jun 2022 15:42:31 +0800 Message-ID: <20220609074233.15532-1-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Register gadget irq to avoid the interrupt handler is occurred or scheduled during the unbind flow, may happen when do android function switch stress test. Signed-off-by: Chunfeng Yun Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: AngeloGioacchino Del Regno --- drivers/usb/mtu3/mtu3_gadget.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index 9977600616d7..d57cea62fe6b 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -680,6 +680,7 @@ int mtu3_gadget_setup(struct mtu3 *mtu) mtu->g.speed = USB_SPEED_UNKNOWN; mtu->g.sg_supported = 0; mtu->g.name = MTU3_DRIVER_NAME; + mtu->g.irq = mtu->irq; mtu->is_active = 0; mtu->delayed_status = false; From patchwork Thu Jun 9 07:42:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 580573 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFC48C433EF for ; Thu, 9 Jun 2022 07:42:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240187AbiFIHmw (ORCPT ); Thu, 9 Jun 2022 03:42:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240132AbiFIHmp (ORCPT ); Thu, 9 Jun 2022 03:42:45 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3E051DA52; Thu, 9 Jun 2022 00:42:43 -0700 (PDT) X-UUID: 1404f54a2a6c40eaa4e7087ddf05d916-20220609 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5, REQID:cbae9d9a-7040-4dd5-b802-665c971927b5, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Release_Ham,ACT ION:release,TS:100 X-CID-INFO: VERSION:1.1.5, REQID:cbae9d9a-7040-4dd5-b802-665c971927b5, OB:0, LOB: 0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,RULE:Spam_GS981B3D,ACT ION:quarantine,TS:100 X-CID-META: VersionHash:2a19b09, CLOUDID:b19c39e5-2ba2-4dc1-b6c5-11feb6c769e0, C OID:64c1756fc639,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:1,File:nil,QS:0,BEC:nil X-UUID: 1404f54a2a6c40eaa4e7087ddf05d916-20220609 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 537685179; Thu, 09 Jun 2022 15:42:37 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 9 Jun 2022 15:42:36 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 9 Jun 2022 15:42:35 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman CC: Chunfeng Yun , Matthias Brugger , , , , , Eddie Hung Subject: [PATCH 2/3] usb: mtu3: implement udc_async_callbacks of gadget operation Date: Thu, 9 Jun 2022 15:42:32 +0800 Message-ID: <20220609074233.15532-2-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220609074233.15532-1-chunfeng.yun@mediatek.com> References: <20220609074233.15532-1-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Implement udc_async_callbacks hook function to avoid a race when unnbinding gadget drivers, refer to: 7dc0c55e9f30 ('USB: UDC core: Add udc_async_callbacks gadget op') Signed-off-by: Chunfeng Yun Reviewed-by: AngeloGioacchino Del Regno --- drivers/usb/mtu3/mtu3.h | 1 + drivers/usb/mtu3/mtu3_gadget.c | 19 ++++++++++++++++--- drivers/usb/mtu3/mtu3_gadget_ep0.c | 2 +- 3 files changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h index 022bbdc54e68..8408e1b1a24a 100644 --- a/drivers/usb/mtu3/mtu3.h +++ b/drivers/usb/mtu3/mtu3.h @@ -357,6 +357,7 @@ struct mtu3 { unsigned delayed_status:1; unsigned gen2cp:1; unsigned connected:1; + unsigned async_callbacks:1; u8 address; u8 test_mode_nr; diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index d57cea62fe6b..30999b4debb8 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -592,6 +592,18 @@ mtu3_gadget_set_speed(struct usb_gadget *g, enum usb_device_speed speed) spin_unlock_irqrestore(&mtu->lock, flags); } +static void mtu3_gadget_async_callbacks(struct usb_gadget *g, bool enable) +{ + struct mtu3 *mtu = gadget_to_mtu3(g); + unsigned long flags; + + dev_dbg(mtu->dev, "%s %s\n", __func__, enable ? "en" : "dis"); + + spin_lock_irqsave(&mtu->lock, flags); + mtu->async_callbacks = enable; + spin_unlock_irqrestore(&mtu->lock, flags); +} + static const struct usb_gadget_ops mtu3_gadget_ops = { .get_frame = mtu3_gadget_get_frame, .wakeup = mtu3_gadget_wakeup, @@ -600,6 +612,7 @@ static const struct usb_gadget_ops mtu3_gadget_ops = { .udc_start = mtu3_gadget_start, .udc_stop = mtu3_gadget_stop, .udc_set_speed = mtu3_gadget_set_speed, + .udc_async_callbacks = mtu3_gadget_async_callbacks, }; static void mtu3_state_reset(struct mtu3 *mtu) @@ -697,7 +710,7 @@ void mtu3_gadget_cleanup(struct mtu3 *mtu) void mtu3_gadget_resume(struct mtu3 *mtu) { dev_dbg(mtu->dev, "gadget RESUME\n"); - if (mtu->gadget_driver && mtu->gadget_driver->resume) { + if (mtu->async_callbacks && mtu->gadget_driver && mtu->gadget_driver->resume) { spin_unlock(&mtu->lock); mtu->gadget_driver->resume(&mtu->g); spin_lock(&mtu->lock); @@ -708,7 +721,7 @@ void mtu3_gadget_resume(struct mtu3 *mtu) void mtu3_gadget_suspend(struct mtu3 *mtu) { dev_dbg(mtu->dev, "gadget SUSPEND\n"); - if (mtu->gadget_driver && mtu->gadget_driver->suspend) { + if (mtu->async_callbacks && mtu->gadget_driver && mtu->gadget_driver->suspend) { spin_unlock(&mtu->lock); mtu->gadget_driver->suspend(&mtu->g); spin_lock(&mtu->lock); @@ -719,7 +732,7 @@ void mtu3_gadget_suspend(struct mtu3 *mtu) void mtu3_gadget_disconnect(struct mtu3 *mtu) { dev_dbg(mtu->dev, "gadget DISCONNECT\n"); - if (mtu->gadget_driver && mtu->gadget_driver->disconnect) { + if (mtu->async_callbacks && mtu->gadget_driver && mtu->gadget_driver->disconnect) { spin_unlock(&mtu->lock); mtu->gadget_driver->disconnect(&mtu->g); spin_lock(&mtu->lock); diff --git a/drivers/usb/mtu3/mtu3_gadget_ep0.c b/drivers/usb/mtu3/mtu3_gadget_ep0.c index 0ca47212f1ec..7e7013508af6 100644 --- a/drivers/usb/mtu3/mtu3_gadget_ep0.c +++ b/drivers/usb/mtu3/mtu3_gadget_ep0.c @@ -66,7 +66,7 @@ __acquires(mtu->lock) { int ret; - if (!mtu->gadget_driver) + if (!mtu->gadget_driver || !mtu->async_callbacks) return -EOPNOTSUPP; spin_unlock(&mtu->lock); From patchwork Thu Jun 9 07:42:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 581408 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5FA5C433EF for ; Thu, 9 Jun 2022 07:42:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240083AbiFIHmp (ORCPT ); Thu, 9 Jun 2022 03:42:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239971AbiFIHmn (ORCPT ); Thu, 9 Jun 2022 03:42:43 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4E211D320; Thu, 9 Jun 2022 00:42:42 -0700 (PDT) X-UUID: d220fed201604f07b236b39be68a3192-20220609 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5, REQID:f262cb05-99d1-46e5-83d9-e82e3ff00477, OB:0, LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:5 X-CID-META: VersionHash:2a19b09, CLOUDID:af9c39e5-2ba2-4dc1-b6c5-11feb6c769e0, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:1,File:nil ,QS:0,BEC:nil X-UUID: d220fed201604f07b236b39be68a3192-20220609 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1774173003; Thu, 09 Jun 2022 15:42:37 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Thu, 9 Jun 2022 15:42:36 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 9 Jun 2022 15:42:35 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman CC: Chunfeng Yun , Matthias Brugger , , , , , Eddie Hung Subject: [PATCH 3/3] usb: mtu3: register mtu3_irq by threaded irq Date: Thu, 9 Jun 2022 15:42:33 +0800 Message-ID: <20220609074233.15532-3-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220609074233.15532-1-chunfeng.yun@mediatek.com> References: <20220609074233.15532-1-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Use threaded irq to improve time consuming top-half Signed-off-by: Chunfeng Yun --- drivers/usb/mtu3/mtu3_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index c4a2c37abf62..3c6a670efafa 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -965,7 +965,8 @@ int ssusb_gadget_init(struct ssusb_mtk *ssusb) goto dma_mask_err; } - ret = devm_request_irq(dev, mtu->irq, mtu3_irq, 0, dev_name(dev), mtu); + ret = devm_request_threaded_irq(dev, mtu->irq, NULL, mtu3_irq, + IRQF_ONESHOT, dev_name(dev), mtu); if (ret) { dev_err(dev, "request irq %d failed!\n", mtu->irq); goto irq_err;