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 7E9E0C433EF for ; Wed, 24 Nov 2021 12:55:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345704AbhKXM7C (ORCPT ); Wed, 24 Nov 2021 07:59:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:33124 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346344AbhKXMzy (ORCPT ); Wed, 24 Nov 2021 07:55:54 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 27F81615E6; Wed, 24 Nov 2021 12:32:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637757126; bh=ppjQpJ3BT+IxHTPIg1arb5LdUzdb7vcG/rv012g1/8c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RrAWx8Mjx4RwqPvmvWeHH4qo43+A3s3uwKXqUul1vGK+A00ZaLT5sSsE+Zx7nvY02 Qa8beFzg6SByRpSaQGmUYa2Xbzuwair32sOoApp8vQB7KDk+VB6jGPuPwWEot9wzOI PP70vAVU+xymev7TabCcJprggrcDiJESX5gtZlck= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Xiaoming Ni , Michael Ellerman Subject: [PATCH 4.19 067/323] powerpc/85xx: Fix oops when mpc85xx_smp_guts_ids node cannot be found Date: Wed, 24 Nov 2021 12:54:17 +0100 Message-Id: <20211124115721.122647587@linuxfoundation.org> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211124115718.822024889@linuxfoundation.org> References: <20211124115718.822024889@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: Xiaoming Ni commit 3c2172c1c47b4079c29f0e6637d764a99355ebcd upstream. When the field described in mpc85xx_smp_guts_ids[] is not configured in dtb, the mpc85xx_setup_pmc() does not assign a value to the "guts" variable. As a result, the oops is triggered when mpc85xx_freeze_time_base() is executed. Fixes: 56f1ba280719 ("powerpc/mpc85xx: refactor the PM operations") Cc: stable@vger.kernel.org # v4.6+ Signed-off-by: Xiaoming Ni Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210929033646.39630-2-nixiaoming@huawei.com Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_pm_ops.c @@ -98,9 +98,8 @@ int __init mpc85xx_setup_pmc(void) pr_err("Could not map guts node address\n"); return -ENOMEM; } + qoriq_pm_ops = &mpc85xx_pm_ops; } - qoriq_pm_ops = &mpc85xx_pm_ops; - return 0; }