From patchwork Tue May 31 09:36:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linyu Yuan X-Patchwork-Id: 12865199 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 A6A31C433F5 for ; Tue, 31 May 2022 09:36:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245319AbiEaJgY (ORCPT ); Tue, 31 May 2022 05:36:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238680AbiEaJgX (ORCPT ); Tue, 31 May 2022 05:36:23 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8F2EF819BE for ; Tue, 31 May 2022 02:36:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1653989782; x=1685525782; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=CRd+0vixje8x8KfN2Pkxtt7YwDEJRpyNPrKJcNe2Bjk=; b=piSJLaeACGKK3ix/psYRcB1heHSSe95SuV4KOU+Wcr0rxTErBXLEoWql lvdqHfIxelKt7VI/AevYAV0Rwu+Gnk682jheOXerCMDW4O9JRGwDGaRU8 VYhN32WgoRsYuJCy3ZhFoX3xbQGhPcMf6eDjxSjPn8fFmMDyNo/wOhKR2 Q=; Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 31 May 2022 02:36:22 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 May 2022 02:36:21 -0700 Received: from nalasex01b.na.qualcomm.com (10.47.209.197) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 31 May 2022 02:36:21 -0700 Received: from linyyuan-gv.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 31 May 2022 02:36:19 -0700 From: Linyu Yuan To: Felipe Balbi , Greg Kroah-Hartman CC: , Michael Wu , "John Keeping" , Linyu Yuan Subject: [PATCH v1 0/2] usb: f_fs: safe operation in ffs_epfile_io() Date: Tue, 31 May 2022 17:36:13 +0800 Message-ID: <1653989775-14267-1-git-send-email-quic_linyyuan@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01b.na.qualcomm.com (10.47.209.197) Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Fix two possible issue in ffs_epfile_io() when operation at blocking mode. (note: Two changes queue internally for a long time, when I saw Michael Wu send a patch[1], I also share to him, there is some discussion but still not get his ACK. now also saw John Keeping comment the change, this change is doing a little difference, hope it not break the rules.) [1] https://lore.kernel.org/linux-usb/YpUJkxWBNuZiW7Xk@donbot/T/#m52a26046ed0e3ca4e7b4181c7c808f9e6d1f3ba5 Linyu Yuan (2): usb: gadget: ffs: change ep->status safe in ffs_epfile_io() usb: gadget: ffs: change ep->ep safe in ffs_epfile_io() drivers/usb/gadget/function/f_fs.c | 38 +++++++++++++++++++++++--------------- 1 file changed, 23 insertions(+), 15 deletions(-)