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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 44F28C43333 for ; Wed, 20 Jan 2021 02:31:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0F7972250E for ; Wed, 20 Jan 2021 02:31:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732751AbhATCb3 (ORCPT ); Tue, 19 Jan 2021 21:31:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:47300 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730742AbhATB3Y (ORCPT ); Tue, 19 Jan 2021 20:29:24 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 978D723432; Wed, 20 Jan 2021 01:27:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611106065; bh=SWD2aNiJ6IklhdOfik610qO3PUhrM7KUlGSJl2Cc1jk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DIsBZN4em6CD8MpE/N8VGtANZb9vxoTuYXbytCcDLVjyNSU3ks8B+gESJw/FI0CRR QE37RYLqtdmyms9OjVrnfhQyr2QhDsEP8gdAthrHu4dD7n/bZybZ7OZP/1G184Fw7v jlR2rzlcJzIgx5qIpN7ohE1NOk7nINJz2gb7bekFZVKyei4VvEkQdinZbqledyPU7A FN/Dyys8UsRTLMLNYpLviPu0MHGcWZNFuntviF9dZiVFOzrdioL3NTYnRnMgovt1EP uAJ0AOy6pn36E17DGJpFJis/jfb1tJ7eCfGSc/xGkOQWGIIUUv+IlbnI5Uiyy+z5sT dfe2dRMxPWrEQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Can Guo , Avri Altman , Stanley Chu , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 03/15] scsi: ufs: Correct the LUN used in eh_device_reset_handler() callback Date: Tue, 19 Jan 2021 20:27:28 -0500 Message-Id: <20210120012740.770354-3-sashal@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210120012740.770354-1-sashal@kernel.org> References: <20210120012740.770354-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Can Guo [ Upstream commit 35fc4cd34426c242ab015ef280853b7bff101f48 ] Users can initiate resets to specific SCSI device/target/host through IOCTL. When this happens, the SCSI cmd passed to eh_device/target/host _reset_handler() callbacks is initialized with a request whose tag is -1. In this case it is not right for eh_device_reset_handler() callback to count on the LUN get from hba->lrb[-1]. Fix it by getting LUN from the SCSI device associated with the SCSI cmd. Link: https://lore.kernel.org/r/1609157080-26283-1-git-send-email-cang@codeaurora.org Reviewed-by: Avri Altman Reviewed-by: Stanley Chu Signed-off-by: Can Guo Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ufs/ufshcd.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 40f478c4d118f..b18430efb00fb 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -5772,19 +5772,16 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd) { struct Scsi_Host *host; struct ufs_hba *hba; - unsigned int tag; u32 pos; int err; - u8 resp = 0xF; - struct ufshcd_lrb *lrbp; + u8 resp = 0xF, lun; unsigned long flags; host = cmd->device->host; hba = shost_priv(host); - tag = cmd->request->tag; - lrbp = &hba->lrb[tag]; - err = ufshcd_issue_tm_cmd(hba, lrbp->lun, 0, UFS_LOGICAL_RESET, &resp); + lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun); + err = ufshcd_issue_tm_cmd(hba, lun, 0, UFS_LOGICAL_RESET, &resp); if (err || resp != UPIU_TASK_MANAGEMENT_FUNC_COMPL) { if (!err) err = resp; @@ -5793,7 +5790,7 @@ static int ufshcd_eh_device_reset_handler(struct scsi_cmnd *cmd) /* clear the commands that were pending for corresponding LUN */ for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs) { - if (hba->lrb[pos].lun == lrbp->lun) { + if (hba->lrb[pos].lun == lun) { err = ufshcd_clear_cmd(hba, pos); if (err) break; -- 2.27.0