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: Chunfeng Yun X-Patchwork-Id: 13204603 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 95737C6FD1D for ; Fri, 7 Apr 2023 08:51:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DQtLZidxk+EAE3/1GPue53YN/QcoIF0taQNZH66lfXU=; b=gNoGGqSsay2WND R7xz+TNh0HjgKIDR/QQ0+Vp4Aer7tsMZ7ncdGEUyj6X8cGAxv0/LLfZaqL4cmMzYNWsK3NHXGfZYi Pubq5Fiay+2YTpg5B7OQB9tfDOEofxcR7O5Wh/oSaG9GLC1dEYeuvnNjOg1sHwwv9FF3l5Brc2hfy +MLyJu8cmVHqq1K3YKKjQl3QrfQXAHwnbYDcDkbqKCbuajQl31M4JfxPPLXKIlQi0THTReGFUms73 akGAqKFppwyMCmW/b60ZH60/0lOMCUlTBZxgEeXpA3H60IM1XlnnCYSaFVZ3r/QMgESREtcltQK4m umw/A7nrMIkQOD0+gVwg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pkhnd-009YRi-0F; Fri, 07 Apr 2023 08:50:25 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pkhnZ-009YQm-0R; Fri, 07 Apr 2023 08:50:22 +0000 X-UUID: 389be466d52111ed8687db9d93187ff1-20230407 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:d74ee082-9ef4-4bbd-bd00-8d94eb29dc3f,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:120426c,CLOUDID:88eca02a-564d-42d9-9875-7c868ee415ec,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-UUID: 389be466d52111ed8687db9d93187ff1-20230407 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 817595429; Fri, 07 Apr 2023 01:50:17 -0700 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230407_015021_190787_2B3D1CFD X-CRM114-Status: GOOD ( 12.13 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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); }