From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MIME_BASE64_TEXT,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B39EAC433DF for ; Fri, 24 Jul 2020 14:02:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8B40420663 for ; Fri, 24 Jul 2020 14:02:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="GaNVz3Ht" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726730AbgGXOCx (ORCPT ); Fri, 24 Jul 2020 10:02:53 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:2215 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726503AbgGXOCw (ORCPT ); Fri, 24 Jul 2020 10:02:52 -0400 X-UUID: 7d03c5e8d5614c01b1dea987b338fce4-20200724 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=Nz8Osbgnil53yDCY8vBue9WxW2K6KBh+DmnbLurDntQ=; b=GaNVz3HtX4Bh+NM5EuiV84LMnWmerA+Hd/RHkyQwsO99SoBzHoxlrrKRnx9PKzpCyjMn/LIQr3ToeRhoxm9kVhRcxwpfhWLYoRX+8hQHQXylYvFK1RVGwYgfL8ZAXKjvt7IZZX6BvVzm/Q1krDUWGsZunHG2LnU6wAXtKz1TT+U=; X-UUID: 7d03c5e8d5614c01b1dea987b338fce4-20200724 Received: from mtkcas07.mediatek.inc [(172.21.101.84)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1969448085; Fri, 24 Jul 2020 22:02:51 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 24 Jul 2020 22:02:45 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 24 Jul 2020 22:02:45 +0800 From: Stanley Chu To: , , , , , CC: , , , , , , , , , , , , , Stanley Chu Subject: [PATCH v4] scsi: ufs: Cleanup completed request without interrupt notification Date: Fri, 24 Jul 2020 22:02:46 +0800 Message-ID: <20200724140246.19434-1-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SWYgc29tZWhvdyBubyBpbnRlcnJ1cHQgbm90aWZpY2F0aW9uIGlzIHJhaXNlZCBmb3IgYSBjb21w bGV0ZWQgcmVxdWVzdA0KYW5kIGl0cyBkb29yYmVsbCBiaXQgaXMgY2xlYXJlZCBieSBob3N0LCBV RlMgZHJpdmVyIG5lZWRzIHRvIGNsZWFudXANCml0cyBvdXRzdGFuZGluZyBiaXQgaW4gdWZzaGNk X2Fib3J0KCkuIE90aGVyd2lzZSwgc3lzdGVtIG1heSBiZWhhdmUNCmFibm9ybWFsbHkgYnkgYmVs b3cgZmxvdzoNCg0KQWZ0ZXIgdWZzaGNkX2Fib3J0KCkgcmV0dXJucywgdGhpcyByZXF1ZXN0IHdp bGwgYmUgcmVxdWV1ZWQgYnkgU0NTSQ0KbGF5ZXIgd2l0aCBpdHMgb3V0c3RhbmRpbmcgYml0IHNl dC4gQW55IGZ1dHVyZSBjb21wbGV0ZWQgcmVxdWVzdA0Kd2lsbCB0cmlnZ2VyIHVmc2hjZF90cmFu c2Zlcl9yZXFfY29tcGwoKSB0byBoYW5kbGUgYWxsICJjb21wbGV0ZWQNCm91dHN0YW5kaW5nIGJp dHMiLiBJbiB0aGlzIHRpbWUsIHRoZSAiYWJub3JtYWwgb3V0c3RhbmRpbmcgYml0Ig0Kd2lsbCBi ZSBkZXRlY3RlZCBhbmQgdGhlICJyZXF1ZXVlZCByZXF1ZXN0IiB3aWxsIGJlIGNob3NlbiB0byBl eGVjdXRlDQpyZXF1ZXN0IHBvc3QtcHJvY2Vzc2luZyBmbG93LiBUaGlzIGlzIHdyb25nIGJlY2F1 c2UgdGhpcyByZXF1ZXN0IGlzDQpzdGlsbCAiYWxpdmUiLg0KDQpTaWduZWQtb2ZmLWJ5OiBTdGFu bGV5IENodSA8c3RhbmxleS5jaHVAbWVkaWF0ZWsuY29tPg0KLS0tDQogZHJpdmVycy9zY3NpL3Vm cy91ZnNoY2QuYyB8IDMgKystDQogMSBmaWxlIGNoYW5nZWQsIDIgaW5zZXJ0aW9ucygrKSwgMSBk ZWxldGlvbigtKQ0KDQpkaWZmIC0tZ2l0IGEvZHJpdmVycy9zY3NpL3Vmcy91ZnNoY2QuYyBiL2Ry aXZlcnMvc2NzaS91ZnMvdWZzaGNkLmMNCmluZGV4IDU3N2NjMGQ3NDg3Zi4uOWQxODBkYTc3NDg4 IDEwMDY0NA0KLS0tIGEvZHJpdmVycy9zY3NpL3Vmcy91ZnNoY2QuYw0KKysrIGIvZHJpdmVycy9z Y3NpL3Vmcy91ZnNoY2QuYw0KQEAgLTY0OTMsNyArNjQ5Myw3IEBAIHN0YXRpYyBpbnQgdWZzaGNk X2Fib3J0KHN0cnVjdCBzY3NpX2NtbmQgKmNtZCkNCiAJCQkvKiBjb21tYW5kIGNvbXBsZXRlZCBh bHJlYWR5ICovDQogCQkJZGV2X2VycihoYmEtPmRldiwgIiVzOiBjbWQgYXQgdGFnICVkIHN1Y2Nl c3NmdWxseSBjbGVhcmVkIGZyb20gREIuXG4iLA0KIAkJCQlfX2Z1bmNfXywgdGFnKTsNCi0JCQln b3RvIG91dDsNCisJCQlnb3RvIGNsZWFudXA7DQogCQl9IGVsc2Ugew0KIAkJCWRldl9lcnIoaGJh LT5kZXYsDQogCQkJCSIlczogbm8gcmVzcG9uc2UgZnJvbSBkZXZpY2UuIHRhZyA9ICVkLCBlcnIg JWRcbiIsDQpAQCAtNjUyNyw2ICs2NTI3LDcgQEAgc3RhdGljIGludCB1ZnNoY2RfYWJvcnQoc3Ry dWN0IHNjc2lfY21uZCAqY21kKQ0KIAkJZ290byBvdXQ7DQogCX0NCiANCitjbGVhbnVwOg0KIAlz Y3NpX2RtYV91bm1hcChjbWQpOw0KIA0KIAlzcGluX2xvY2tfaXJxc2F2ZShob3N0LT5ob3N0X2xv Y2ssIGZsYWdzKTsNCi0tIA0KMi4xOC4wDQo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69E2EC433E1 for ; Fri, 24 Jul 2020 14:06:25 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 37FAF206D8 for ; Fri, 24 Jul 2020 14:06:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="XVLTNesf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="GaNVz3Ht" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37FAF206D8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=9KuajU6LJMC+ArDUFeXlMiEEdtRimXiMuutxLZb4/wU=; b=XVLTNesfBTeLrRStwQZ5BesCSP zALa7IOoYBe8GxnKjRW3JkrSRtb/Lap4Y0tzWAiibUZe66BydS7UzV9gD+Iv2WXC0wZHW0Ek0RN+c 6fCrFwyJhndd7L0ZlnX1pK2JmXRsaHRLh66ui5nRYsbXh1CZJ6e9P8NIa2QQkuV0JP/RqccWtW8JZ Q0fGfGiV2WUVrOcaObE0r+JZt9n8hI3D5FiaLF9Bh1iAMAYgjPkCHDowpPhCP4qQh304I4zVJeqNZ e0lABtqRYWXai+c0UJ759fPfY5/wye8UxiwWDdb2/ULhD/nimU/57o9n7x+gU9nelRoXHbMjFBMPl qy41+HTQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jyyKy-0002NN-Q4; Fri, 24 Jul 2020 14:06:12 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jyyKt-0002Ls-Ti; Fri, 24 Jul 2020 14:06:09 +0000 X-UUID: 59a96f7addce4c129767745d7dccdc15-20200724 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=Nz8Osbgnil53yDCY8vBue9WxW2K6KBh+DmnbLurDntQ=; b=GaNVz3HtX4Bh+NM5EuiV84LMnWmerA+Hd/RHkyQwsO99SoBzHoxlrrKRnx9PKzpCyjMn/LIQr3ToeRhoxm9kVhRcxwpfhWLYoRX+8hQHQXylYvFK1RVGwYgfL8ZAXKjvt7IZZX6BvVzm/Q1krDUWGsZunHG2LnU6wAXtKz1TT+U=; X-UUID: 59a96f7addce4c129767745d7dccdc15-20200724 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 243430705; Fri, 24 Jul 2020 06:02:39 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 24 Jul 2020 07:02:53 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 24 Jul 2020 22:02:45 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 24 Jul 2020 22:02:45 +0800 From: Stanley Chu To: , , , , , Subject: [PATCH v4] scsi: ufs: Cleanup completed request without interrupt notification Date: Fri, 24 Jul 2020 22:02:46 +0800 Message-ID: <20200724140246.19434-1-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200724_100608_100989_5ABAE52C X-CRM114-Status: GOOD ( 10.23 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stanley Chu , andy.teng@mediatek.com, cc.chou@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, cang@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, beanhuo@micron.com, chaotian.jing@mediatek.com, linux-arm-kernel@lists.infradead.org, asutoshd@codeaurora.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org If somehow no interrupt notification is raised for a completed request and its doorbell bit is cleared by host, UFS driver needs to cleanup its outstanding bit in ufshcd_abort(). Otherwise, system may behave abnormally by below flow: After ufshcd_abort() returns, this request will be requeued by SCSI layer with its outstanding bit set. Any future completed request will trigger ufshcd_transfer_req_compl() to handle all "completed outstanding bits". In this time, the "abnormal outstanding bit" will be detected and the "requeued request" will be chosen to execute request post-processing flow. This is wrong because this request is still "alive". Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 577cc0d7487f..9d180da77488 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6493,7 +6493,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) /* command completed already */ dev_err(hba->dev, "%s: cmd at tag %d successfully cleared from DB.\n", __func__, tag); - goto out; + goto cleanup; } else { dev_err(hba->dev, "%s: no response from device. tag = %d, err %d\n", @@ -6527,6 +6527,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) goto out; } +cleanup: scsi_dma_unmap(cmd); spin_lock_irqsave(host->host_lock, flags); -- 2.18.0 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8529CC433E0 for ; Fri, 24 Jul 2020 14:07:36 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5055520674 for ; Fri, 24 Jul 2020 14:07:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="peHkO5Hb"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="GaNVz3Ht" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5055520674 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=Nw0bbuFXmOdPLqMpsvwbdZ1Z5o42aHcUXIGwlAubrmw=; b=peHkO5Hb57xvdp4KY4LzsWPO/W 1QFJc32DxIHWnfP2HqjBD33xPbbpZQuuGcvU7o6/QJvD5fRPexZTZO0yAD4CIQx2RNNRJ/jQ+Lg7O /utmC7Al5QPiPfwZOrpd1PQl0DjdlWqVojl5wRsERqLxVShQK8q9Vg6T5EwrFAuNyPJtRQBTY7X/M RgpZQpj5P2dcjzY6uemvm27avYDAIYsGuch9MWrYFunImzaJlo2OKtdp+f8LLjwr7T4wkQOdFqTy8 BS1rrYDOQCS9F0JAg5vol9SAS7guRlhrkldkMfLcUOabN1RBo0b/5fkLMTfJLhbdNtKWH2+2GKWYr ZzE2U89w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jyyKw-0002MY-GW; Fri, 24 Jul 2020 14:06:10 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jyyKt-0002Ls-Ti; Fri, 24 Jul 2020 14:06:09 +0000 X-UUID: 59a96f7addce4c129767745d7dccdc15-20200724 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=Nz8Osbgnil53yDCY8vBue9WxW2K6KBh+DmnbLurDntQ=; b=GaNVz3HtX4Bh+NM5EuiV84LMnWmerA+Hd/RHkyQwsO99SoBzHoxlrrKRnx9PKzpCyjMn/LIQr3ToeRhoxm9kVhRcxwpfhWLYoRX+8hQHQXylYvFK1RVGwYgfL8ZAXKjvt7IZZX6BvVzm/Q1krDUWGsZunHG2LnU6wAXtKz1TT+U=; X-UUID: 59a96f7addce4c129767745d7dccdc15-20200724 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 243430705; Fri, 24 Jul 2020 06:02:39 -0800 Received: from mtkmbs08n1.mediatek.inc (172.21.101.55) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 24 Jul 2020 07:02:53 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 24 Jul 2020 22:02:45 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 24 Jul 2020 22:02:45 +0800 From: Stanley Chu To: , , , , , Subject: [PATCH v4] scsi: ufs: Cleanup completed request without interrupt notification Date: Fri, 24 Jul 2020 22:02:46 +0800 Message-ID: <20200724140246.19434-1-stanley.chu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200724_100608_100989_5ABAE52C X-CRM114-Status: GOOD ( 10.23 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stanley Chu , andy.teng@mediatek.com, cc.chou@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, cang@codeaurora.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, beanhuo@micron.com, chaotian.jing@mediatek.com, linux-arm-kernel@lists.infradead.org, asutoshd@codeaurora.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org If somehow no interrupt notification is raised for a completed request and its doorbell bit is cleared by host, UFS driver needs to cleanup its outstanding bit in ufshcd_abort(). Otherwise, system may behave abnormally by below flow: After ufshcd_abort() returns, this request will be requeued by SCSI layer with its outstanding bit set. Any future completed request will trigger ufshcd_transfer_req_compl() to handle all "completed outstanding bits". In this time, the "abnormal outstanding bit" will be detected and the "requeued request" will be chosen to execute request post-processing flow. This is wrong because this request is still "alive". Signed-off-by: Stanley Chu --- drivers/scsi/ufs/ufshcd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 577cc0d7487f..9d180da77488 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6493,7 +6493,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) /* command completed already */ dev_err(hba->dev, "%s: cmd at tag %d successfully cleared from DB.\n", __func__, tag); - goto out; + goto cleanup; } else { dev_err(hba->dev, "%s: no response from device. tag = %d, err %d\n", @@ -6527,6 +6527,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) goto out; } +cleanup: scsi_dma_unmap(cmd); spin_lock_irqsave(host->host_lock, flags); -- 2.18.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel