From patchwork Tue Mar 10 12:42:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 229643 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 B20E7C10F27 for ; Tue, 10 Mar 2020 13:10:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 869A52468D for ; Tue, 10 Mar 2020 13:10:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583845845; bh=E4GbBF7E1aPQoXCe2t245Z6eLcHY2IO/ccQeT7s8F94=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WTw2M8+vkVIYTuVsW0cZEMTjsZBfciZYJKtKCNlKVk7SGTyeJG/bmBAPZU+H0TO+f xIgCkD/9oB2V4CU0WHFd8Y20N4ugzqK7cCH2q1fCnKaiSVioSrJCwW/CpKEk+y2ZgS Nww/bmlK+MhcCE/TANKonh1kBVpDJrPAdQG58i8A= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731351AbgCJNKo (ORCPT ); Tue, 10 Mar 2020 09:10:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:60180 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731345AbgCJNKo (ORCPT ); Tue, 10 Mar 2020 09:10:44 -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 BE1CA208E4; Tue, 10 Mar 2020 13:10:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583845843; bh=E4GbBF7E1aPQoXCe2t245Z6eLcHY2IO/ccQeT7s8F94=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q/eEvDfMt1RkojHwmVBDjXrvr+y6vEa/l0Htn/cMrC8xAQF6tPumeFwZiVT4brvGd DppSFsB2D1/n+0JjJe4wg6d1eBx1rPUqnU31dLIgUGEtZChIDfcV3fTPdOb8ERdgYA JwlcaeHtEp1PvHsTqfvqKyZC6YYaVEuVUOj7Zutk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lucas Stach , Ahmad Fatoum , Rouven Czerwinski , Shawn Guo Subject: [PATCH 4.14 120/126] ARM: imx: build v7_cpu_resume() unconditionally Date: Tue, 10 Mar 2020 13:42:21 +0100 Message-Id: <20200310124211.120061250@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310124203.704193207@linuxfoundation.org> References: <20200310124203.704193207@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ahmad Fatoum commit 512a928affd51c2dc631401e56ad5ee5d5dd68b6 upstream. This function is not only needed by the platform suspend code, but is also reused as the CPU resume function when the ARM cores can be powered down completely in deep idle, which is the case on i.MX6SX and i.MX6UL(L). Providing the static inline stub whenever CONFIG_SUSPEND is disabled means that those platforms will hang on resume from cpuidle if suspend is disabled. So there are two problems: - The static inline stub masks the linker error - The function is not available where needed Fix both by just building the function unconditionally, when CONFIG_SOC_IMX6 is enabled. The actual code is three instructions long, so it's arguably ok to just leave it in for all i.MX6 kernel configurations. Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx") Signed-off-by: Lucas Stach Signed-off-by: Ahmad Fatoum Signed-off-by: Rouven Czerwinski Signed-off-by: Shawn Guo Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-imx/Makefile | 2 ++ arch/arm/mach-imx/common.h | 4 ++-- arch/arm/mach-imx/resume-imx6.S | 24 ++++++++++++++++++++++++ arch/arm/mach-imx/suspend-imx6.S | 14 -------------- 4 files changed, 28 insertions(+), 16 deletions(-) --- a/arch/arm/mach-imx/Makefile +++ b/arch/arm/mach-imx/Makefile @@ -87,6 +87,8 @@ AFLAGS_suspend-imx6.o :=-Wa,-march=armv7 obj-$(CONFIG_SOC_IMX6) += suspend-imx6.o obj-$(CONFIG_SOC_IMX53) += suspend-imx53.o endif +AFLAGS_resume-imx6.o :=-Wa,-march=armv7-a +obj-$(CONFIG_SOC_IMX6) += resume-imx6.o obj-$(CONFIG_SOC_IMX6) += pm-imx6.o obj-$(CONFIG_SOC_IMX1) += mach-imx1.o --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -111,17 +111,17 @@ void imx_cpu_die(unsigned int cpu); int imx_cpu_kill(unsigned int cpu); #ifdef CONFIG_SUSPEND -void v7_cpu_resume(void); void imx53_suspend(void __iomem *ocram_vbase); extern const u32 imx53_suspend_sz; void imx6_suspend(void __iomem *ocram_vbase); #else -static inline void v7_cpu_resume(void) {} static inline void imx53_suspend(void __iomem *ocram_vbase) {} static const u32 imx53_suspend_sz; static inline void imx6_suspend(void __iomem *ocram_vbase) {} #endif +void v7_cpu_resume(void); + void imx6_pm_ccm_init(const char *ccm_compat); void imx6q_pm_init(void); void imx6dl_pm_init(void); --- /dev/null +++ b/arch/arm/mach-imx/resume-imx6.S @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + */ + +#include +#include +#include +#include +#include "hardware.h" + +/* + * The following code must assume it is running from physical address + * where absolute virtual addresses to the data section have to be + * turned into relative ones. + */ + +ENTRY(v7_cpu_resume) + bl v7_invalidate_l1 +#ifdef CONFIG_CACHE_L2X0 + bl l2c310_early_resume +#endif + b cpu_resume +ENDPROC(v7_cpu_resume) --- a/arch/arm/mach-imx/suspend-imx6.S +++ b/arch/arm/mach-imx/suspend-imx6.S @@ -333,17 +333,3 @@ resume: ret lr ENDPROC(imx6_suspend) - -/* - * The following code must assume it is running from physical address - * where absolute virtual addresses to the data section have to be - * turned into relative ones. - */ - -ENTRY(v7_cpu_resume) - bl v7_invalidate_l1 -#ifdef CONFIG_CACHE_L2X0 - bl l2c310_early_resume -#endif - b cpu_resume -ENDPROC(v7_cpu_resume)