From patchwork Tue Aug 27 07:49:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 11116261 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 26ADB13B1 for ; Tue, 27 Aug 2019 08:00:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 058D022CBB for ; Tue, 27 Aug 2019 08:00:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566892840; bh=cLlmmAGCVwDgnENcAsbB4Ldr9YL25YNv2N8nZLv1Zok=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=A3AwpTlhwU2QJUWjWhZDWQiDaS5am2wxkRgopJK+GcR/Y2ibFVCp/JUYyKyoOyp20 584KKVCeCzw8IgTS63KIVp2YdCc6TptsS1ZIV3dQqLwY97xZPtOAufXzdXWsmmijbw bhKXEIvbxv+8oqX2o2We+ArBzXXjuYq6eKW41Wd0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731548AbfH0IAi (ORCPT ); Tue, 27 Aug 2019 04:00:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:55786 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730838AbfH0IAi (ORCPT ); Tue, 27 Aug 2019 04:00:38 -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 2504021881; Tue, 27 Aug 2019 08:00:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566892837; bh=cLlmmAGCVwDgnENcAsbB4Ldr9YL25YNv2N8nZLv1Zok=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yqhvwkLaD5MzcZpYFLeCFlSPQJ3/l/dbNQjOF3KlbH9z2SjiqwoBeUWYhUEhIKEFF 55yZzNCaUdYAE/ThkiPfx7KMKwtXEN6LXCEr383H/oXPCcd7LgYfNOWcQlcah/XuVm ABbdHOV3kvGSqOC4ha/TTZvmTaL495b8F/ramWJ4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Thomas Bogendoerfer , Paul Burton , Ralf Baechle , James Hogan , linux-mips@vger.kernel.org, Sasha Levin Subject: [PATCH 5.2 014/162] MIPS: kernel: only use i8253 clocksource with periodic clockevent Date: Tue, 27 Aug 2019 09:49:02 +0200 Message-Id: <20190827072738.837030787@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190827072738.093683223@linuxfoundation.org> References: <20190827072738.093683223@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org [ Upstream commit a07e3324538a989b7cdbf2c679be6a7f9df2544f ] i8253 clocksource needs a free running timer. This could only be used, if i8253 clockevent is set up as periodic. Signed-off-by: Thomas Bogendoerfer Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: James Hogan Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Sasha Levin --- arch/mips/kernel/i8253.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c index 5f209f111e59e..df7ddd246eaac 100644 --- a/arch/mips/kernel/i8253.c +++ b/arch/mips/kernel/i8253.c @@ -32,7 +32,8 @@ void __init setup_pit_timer(void) static int __init init_pit_clocksource(void) { - if (num_possible_cpus() > 1) /* PIT does not scale! */ + if (num_possible_cpus() > 1 || /* PIT does not scale! */ + !clockevent_state_periodic(&i8253_clockevent)) return 0; return clocksource_i8253_init();