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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 295F7C77B73 for ; Mon, 22 May 2023 19:13:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233644AbjEVTN2 (ORCPT ); Mon, 22 May 2023 15:13:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233505AbjEVTN1 (ORCPT ); Mon, 22 May 2023 15:13:27 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6E322B0 for ; Mon, 22 May 2023 12:13:26 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0C9C861F63 for ; Mon, 22 May 2023 19:13:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1CBF8C433D2; Mon, 22 May 2023 19:13:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684782805; bh=9cHJoxwPwMaoa5mCxHNXA7YdZzP9gyYISNAZzlZpBzY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gNAvzEbOrLSuD7RX7xWIROVP9LyrKDrVdRcENQ7hJjUHGvaj9L9G/L2EGWxhTITyL t5ouQRyAulFM1ynlWZ4xNtQf8mZzdXtgVU3NpF9qcAugtmHp1quVfTY0PUZUW0RQRw tC5O07w3qfjYHK6Zm5TnSTVIh8gLl0qQKgkHds24= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Keoseong Park , Avri Altman , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 5.15 004/203] scsi: ufs: core: Fix I/O hang that occurs when BKOPS fails in W-LUN suspend Date: Mon, 22 May 2023 20:07:08 +0100 Message-Id: <20230522190355.058446013@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230522190354.935300867@linuxfoundation.org> References: <20230522190354.935300867@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Keoseong Park [ Upstream commit 1a7edd041f2d252f251523ba3f2eaead076a8f8d ] Even when urgent BKOPS fails, the consumer will get stuck in runtime suspend status. Like commit 1a5665fc8d7a ("scsi: ufs: core: WLUN suspend SSU/enter hibern8 fail recovery"), trigger the error handler and return -EBUSY to break the suspend. Fixes: b294ff3e3449 ("scsi: ufs: core: Enable power management for wlun") Signed-off-by: Keoseong Park Link: https://lore.kernel.org/r/20230425031721epcms2p5d4de65616478c967d466626e20c42a3a@epcms2p5 Reviewed-by: Avri Altman Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ufs/ufshcd.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index bc2b16701a116..d00d263705e15 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -8756,8 +8756,16 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) * that performance might be impacted. */ ret = ufshcd_urgent_bkops(hba); - if (ret) + if (ret) { + /* + * If return err in suspend flow, IO will hang. + * Trigger error handler and break suspend for + * error recovery. + */ + ufshcd_force_error_recovery(hba); + ret = -EBUSY; goto enable_scaling; + } } else { /* make sure that auto bkops is disabled */ ufshcd_disable_auto_bkops(hba); -- 2.39.2