From patchwork Fri Apr 30 02:14:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Keoseong Park X-Patchwork-Id: 12232165 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=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 EBC72C433ED for ; Fri, 30 Apr 2021 02:23:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B84CC6143A for ; Fri, 30 Apr 2021 02:23:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229901AbhD3CXx (ORCPT ); Thu, 29 Apr 2021 22:23:53 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:56391 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229577AbhD3CXw (ORCPT ); Thu, 29 Apr 2021 22:23:52 -0400 Received: from epcas3p3.samsung.com (unknown [182.195.41.21]) by mailout4.samsung.com (KnoxPortal) with ESMTP id 20210430022302epoutp04d77d6754b03e5a6e915ca3c9ea05713d~6gXtI0B1B0818208182epoutp04M for ; Fri, 30 Apr 2021 02:23:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout4.samsung.com 20210430022302epoutp04d77d6754b03e5a6e915ca3c9ea05713d~6gXtI0B1B0818208182epoutp04M DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1619749382; bh=j4LWkwldRLUrGOZFZYtV8wATCeynPe4551DILqQur/4=; h=Subject:Reply-To:From:To:CC:Date:References:From; b=KzV8x6qFK4eOk27ftngGS/MxvDWRnyXmeDdNSJEWoMbJ9dv2kOCWbfSwna+xohPve IG3tXir8u+FdmBdug2ZnmGlAOr4lcIzDcYmqu3CYX6zAIbxv3155xi3cMsPFQZEDol uGKYHcsaJZ0S2WqaPzZhAiIsazIy4wFTdtgg7pug= Received: from epsnrtp4.localdomain (unknown [182.195.42.165]) by epcas3p4.samsung.com (KnoxPortal) with ESMTP id 20210430022301epcas3p40a37b8920e942d2440983ff5a8aad732~6gXsi7Amt2702827028epcas3p4H; Fri, 30 Apr 2021 02:23:01 +0000 (GMT) Received: from epcpadp4 (unknown [182.195.40.18]) by epsnrtp4.localdomain (Postfix) with ESMTP id 4FWbkY5Z1rz4x9Pv; Fri, 30 Apr 2021 02:23:01 +0000 (GMT) Mime-Version: 1.0 Subject: [PATCH] scsi: ufs: remove redundant initialization of variable Reply-To: keosung.park@samsung.com Sender: Keoseong Park From: Keoseong Park To: ALIM AKHTAR , "avri.altman@wdc.com" , "jejb@linux.ibm.com" , "martin.petersen@oracle.com" , "stanley.chu@mediatek.com" , "cang@codeaurora.org" , "beanhuo@micron.com" , "jaegeuk@kernel.org" , "adrian.hunter@intel.com" , "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Daejun Park , Sung-Jun Park , Jinyoung CHOI X-Priority: 3 X-Content-Kind-Code: NORMAL X-CPGS-Detection: blocking_info_exchange X-Drm-Type: N,general X-Msg-Generator: Mail X-Msg-Type: PERSONAL X-Reply-Demand: N Message-ID: <2038148563.21619749381770.JavaMail.epsvc@epcpadp4> Date: Fri, 30 Apr 2021 11:14:19 +0900 X-CMS-MailID: 20210430021419epcms2p402717e968615d301ba18341d28a828ee X-Sendblock-Type: AUTO_CONFIDENTIAL X-CPGSPASS: Y X-CPGSPASS: Y X-Hop-Count: 3 X-CMS-RootMailID: 20210430021419epcms2p402717e968615d301ba18341d28a828ee References: Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The variable d_lu_wb_buf_alloc may be repeatedly initialized to 0 in a for-loop. If the variable is set to a value other than 0, it exits the for-loop, so there is no need to reset it to 0. Since lun and d_lu_wb_buf_alloc are just being used in a else statement inside a local scope, move the declaration of the variables to that scope. Signed-off-by: Keoseong Park --- drivers/scsi/ufs/ufshcd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 0625da7a42ee..77cc473961a2 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -7277,8 +7277,6 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba) static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) { struct ufs_dev_info *dev_info = &hba->dev_info; - u8 lun; - u32 d_lu_wb_buf_alloc; u32 ext_ufs_feature; if (!ufshcd_is_wb_allowed(hba)) @@ -7318,8 +7316,10 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS)) goto wb_disabled; } else { + u8 lun; + u32 d_lu_wb_buf_alloc = 0; + for (lun = 0; lun < UFS_UPIU_MAX_WB_LUN_ID; lun++) { - d_lu_wb_buf_alloc = 0; ufshcd_read_unit_desc_param(hba, lun, UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS,