From patchwork Fri Apr 7 08:29:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 13204579 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 8BF8AC77B71 for ; Fri, 7 Apr 2023 08:30:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232632AbjDGI3w (ORCPT ); Fri, 7 Apr 2023 04:29:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231765AbjDGI3s (ORCPT ); Fri, 7 Apr 2023 04:29:48 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C0D27DBF; Fri, 7 Apr 2023 01:29:47 -0700 (PDT) X-UUID: 5854ab10d51e11eda9a90f0bb45854f4-20230407 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=vWGHzunDbxWDLDtboxTw3mk43F8Ucc7eRgJDJnklAJo=; b=E3F5zcFTacg9f9AIgo3mbEkMFc4OAFd8wnp/VM4q6hWAzEUDdm6041eaMqx5aVB3lUPViXtyent63G1fDOnUhkGVVHPo6+O4Zoqkf69QjXXKzFZMjwe0Z2xf4eymhA1bqPD/5Hn88vwQ9JSTnm1q13KsL7/yeX0uuxnGkK7m0uE=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.22,REQID:81da8e16-818f-4733-bca9-72ffae391b5f,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:95 X-CID-INFO: VERSION:1.1.22,REQID:81da8e16-818f-4733-bca9-72ffae391b5f,IP:0,URL :0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTION :quarantine,TS:95 X-CID-META: VersionHash:120426c,CLOUDID:7a6281b5-beed-4dfc-bd9c-e1b22fa6ccc4,B ulkID:230407162943II8GT2WT,BulkQuantity:0,Recheck:0,SF:38|29|28|17|19|48,T C:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,CO L:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: 5854ab10d51e11eda9a90f0bb45854f4-20230407 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1891287872; Fri, 07 Apr 2023 16:29:42 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Fri, 7 Apr 2023 16:29:41 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Fri, 7 Apr 2023 16:29:40 +0800 From: Chunfeng Yun To: Greg Kroah-Hartman , Rob Herring CC: Chunfeng Yun , Krzysztof Kozlowski , Matthias Brugger , AngeloGioacchino Del Regno , , , , , , Tianping Fang Subject: [PATCH v2 4/7] usb: mtu3: unlock @mtu->lock just before giving back request Date: Fri, 7 Apr 2023 16:29:34 +0800 Message-ID: <20230407082937.14558-4-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230407082937.14558-1-chunfeng.yun@mediatek.com> References: <20230407082937.14558-1-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org No need unlock @mtu->lock when unmap request, unlock it just before giving back request, due to we do not lock this spinlock when map the request. Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Chunfeng Yun --- v2: add Reviewed-by AngeloGioacchino --- drivers/usb/mtu3/mtu3_gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c index c0264d5426bf..ad0eeac4332d 100644 --- a/drivers/usb/mtu3/mtu3_gadget.c +++ b/drivers/usb/mtu3/mtu3_gadget.c @@ -23,7 +23,6 @@ __acquires(mep->mtu->lock) req->status = status; trace_mtu3_req_complete(mreq); - spin_unlock(&mtu->lock); /* ep0 makes use of PIO, needn't unmap it */ if (mep->epnum) @@ -32,6 +31,7 @@ __acquires(mep->mtu->lock) dev_dbg(mtu->dev, "%s complete req: %p, sts %d, %d/%d\n", mep->name, req, req->status, req->actual, req->length); + spin_unlock(&mtu->lock); usb_gadget_giveback_request(&mep->ep, req); spin_lock(&mtu->lock); }