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 88136CCA481 for ; Tue, 7 Jun 2022 17:41:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348342AbiFGRkr (ORCPT ); Tue, 7 Jun 2022 13:40:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40756 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347561AbiFGRav (ORCPT ); Tue, 7 Jun 2022 13:30:51 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92E9CB0A4C; Tue, 7 Jun 2022 10:27:30 -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 2F0E66141D; Tue, 7 Jun 2022 17:27:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F67DC385A5; Tue, 7 Jun 2022 17:27:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1654622849; bh=wbPLNB7i+1qRZZ5B3n4nz+LdfvHLayxTrkUR/2OUnQo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=v7Lb/cUgWlH1w9LCgcGqjtxIuIEhY89za3Lnsr+aqkVZGowGy5W+H50CT61XJ1PIB a/pab3FCGf/Gp7HoxtJzE2qz+ZO78KsFXgSCylFGFNjxVPv81ddfFx4f1TSFweGUNE QBCcZ29X81O2C3eX70lu/9djtaV/Lsy+G3qBmGYE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kiwoong Kim , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 5.10 164/452] scsi: ufs: core: Exclude UECxx from SFR dump list Date: Tue, 7 Jun 2022 19:00:21 +0200 Message-Id: <20220607164913.450305829@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220607164908.521895282@linuxfoundation.org> References: <20220607164908.521895282@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kiwoong Kim [ Upstream commit ef60031022eb6d972aac86ca26c98c33e1289436 ] Some devices may return invalid or zeroed data during an UIC error condition. In addition, reading these SFRs will clear them. This means the subsequent error handling will not be able to see them and therefore no error handling will be scheduled. Skip reading these SFRs in ufshcd_dump_regs(). Link: https://lore.kernel.org/r/1648689845-33521-1-git-send-email-kwmad.kim@samsung.com Fixes: d67247566450 ("scsi: ufs: Use explicit access size in ufshcd_dump_regs") Signed-off-by: Kiwoong Kim Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ufs/ufshcd.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index bf302776340c..ea6ceab1a1b2 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -107,8 +107,13 @@ int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len, if (!regs) return -ENOMEM; - for (pos = 0; pos < len; pos += 4) + for (pos = 0; pos < len; pos += 4) { + if (offset == 0 && + pos >= REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER && + pos <= REG_UIC_ERROR_CODE_DME) + continue; regs[pos / 4] = ufshcd_readl(hba, offset + pos); + } ufshcd_hex_dump(prefix, regs, len); kfree(regs); -- 2.35.1