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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 F3CCAC2BB55 for ; Thu, 16 Apr 2020 13:39:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D41E720732 for ; Thu, 16 Apr 2020 13:39:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044392; bh=YNqyrUmTtTzpCpSBaY6Qh5xbnshOKHOCcipHDOMmFIo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JrYPq3hl8iS/bXksi60KPuychqNZjzgK7wshb6QVGKhxSvuv1o1aqFWazmJ0YQOk6 k3NO/zjD7bA8xhRxWk+LPyMpBJPIEYy1ZtgutgxFz0mBxFLx1vVW6ZHzzoUX9OA7dg RFr+euhcek+EiNyhjLFstQYrNzgw8OrgEvZ1lTbA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2896350AbgDPNjt (ORCPT ); Thu, 16 Apr 2020 09:39:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:52232 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2897942AbgDPNjs (ORCPT ); Thu, 16 Apr 2020 09:39:48 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 108D6206E9; Thu, 16 Apr 2020 13:39:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044387; bh=YNqyrUmTtTzpCpSBaY6Qh5xbnshOKHOCcipHDOMmFIo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cFicuUdXu9PnwgrQP1YotmA40CXiw2JRMTFwxxIqNMDQJlaHbdIsrUrWzBkkLSmDv g53+vd3rjbYCZIkucrauG7SFWoqyTvGQTzlVcE613RV2GWOLMMCImVHj9Mk/KOsCMd AW/eBPIbkbJUhZpAXoKvOayuYLnas5KmM+5xR02o= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bean Huo , Alim Akhtar , Asutosh Das , Can Guo , Stanley Chu , "Martin K. Petersen" Subject: [PATCH 5.5 196/257] scsi: ufs: fix Auto-Hibern8 error detection Date: Thu, 16 Apr 2020 15:24:07 +0200 Message-Id: <20200416131350.692004522@linuxfoundation.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200416131325.891903893@linuxfoundation.org> References: <20200416131325.891903893@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Stanley Chu commit 5a244e0ea67b293abb1d26c825db2ddde5f2862f upstream. Auto-Hibern8 may be disabled by some vendors or sysfs in runtime even if Auto-Hibern8 capability is supported by host. If Auto-Hibern8 capability is supported by host but not actually enabled, Auto-Hibern8 error shall not happen. To fix this, provide a way to detect if Auto-Hibern8 is actually enabled first, and bypass Auto-Hibern8 disabling case in ufshcd_is_auto_hibern8_error(). Fixes: 821744403913 ("scsi: ufs: Add error-handling of Auto-Hibernate") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200129105251.12466-4-stanley.chu@mediatek.com Reviewed-by: Bean Huo Reviewed-by: Alim Akhtar Reviewed-by: Asutosh Das Reviewed-by: Can Guo Signed-off-by: Stanley Chu Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/ufs/ufshcd.c | 3 ++- drivers/scsi/ufs/ufshcd.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -5513,7 +5513,8 @@ static irqreturn_t ufshcd_update_uic_err static bool ufshcd_is_auto_hibern8_error(struct ufs_hba *hba, u32 intr_mask) { - if (!ufshcd_is_auto_hibern8_supported(hba)) + if (!ufshcd_is_auto_hibern8_supported(hba) || + !ufshcd_is_auto_hibern8_enabled(hba)) return false; if (!(intr_mask & UFSHCD_UIC_HIBERN8_MASK)) --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -55,6 +55,7 @@ #include #include #include +#include #include "unipro.h" #include @@ -781,6 +782,11 @@ static inline bool ufshcd_is_auto_hibern return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT); } +static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba) +{ + return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit) ? true : false; +} + #define ufshcd_writel(hba, val, reg) \ writel((val), (hba)->mmio_base + (reg)) #define ufshcd_readl(hba, reg) \