From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753453AbcLJNsO (ORCPT ); Sat, 10 Dec 2016 08:48:14 -0500 Received: from mail.kernel.org ([198.145.29.136]:50294 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753382AbcLJNsM (ORCPT ); Sat, 10 Dec 2016 08:48:12 -0500 From: Krzysztof Kozlowski To: Sylwester Nawrocki , Kukjin Kim , Krzysztof Kozlowski , Javier Martinez Canillas , Simtec Linux Team , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC 4/7] ARM: s3c64xx: Annotate external clock frequencies __ro_after_init Date: Sat, 10 Dec 2016 15:47:35 +0200 Message-Id: <1481377658-22603-4-git-send-email-krzk@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1481377658-22603-1-git-send-email-krzk@kernel.org> References: <1481377658-22603-1-git-send-email-krzk@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The xtal_f and xusbxti_f static variables are modified only through __init accessors (like s3c64xx_set_xtal_freq()). Later these variables are used only in read-only way so we can mark them __ro_after_init to increase code safeness. Signed-off-by: Krzysztof Kozlowski --- Looks safe, but not tested. --- arch/arm/mach-s3c64xx/common.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-s3c64xx/common.c b/arch/arm/mach-s3c64xx/common.c index 7c66ce1a6bb6..9843eb4dd04e 100644 --- a/arch/arm/mach-s3c64xx/common.c +++ b/arch/arm/mach-s3c64xx/common.c @@ -56,7 +56,8 @@ #include "watchdog-reset.h" /* External clock frequency */ -static unsigned long xtal_f = 12000000, xusbxti_f = 48000000; +static unsigned long xtal_f __ro_after_init = 12000000; +static unsigned long xusbxti_f __ro_after_init = 48000000; void __init s3c64xx_set_xtal_freq(unsigned long freq) { -- 2.7.4