From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754024AbcFTJdj (ORCPT ); Mon, 20 Jun 2016 05:33:39 -0400 Received: from mail-wm0-f49.google.com ([74.125.82.49]:37799 "EHLO mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752872AbcFTJdb (ORCPT ); Mon, 20 Jun 2016 05:33:31 -0400 From: Daniel Lezcano To: daniel.lezcano@linaro.org, tglx@linutronix.de, liviu.dudau@arm.com Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH V3] clocksource/drivers/mps2-timer: Convert init function to return error Date: Mon, 20 Jun 2016 11:26:59 +0200 Message-Id: <1466414820-19574-1-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <20160620091506.GO9711@e106497-lin.cambridge.arm.com> References: <20160620091506.GO9711@e106497-lin.cambridge.arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano --- drivers/clocksource/mps2-timer.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/mps2-timer.c b/drivers/clocksource/mps2-timer.c index 3d33a5e..c303fa9 100644 --- a/drivers/clocksource/mps2-timer.c +++ b/drivers/clocksource/mps2-timer.c @@ -250,7 +250,7 @@ out: return ret; } -static void __init mps2_timer_init(struct device_node *np) +static int __init mps2_timer_init(struct device_node *np) { static int has_clocksource, has_clockevent; int ret; @@ -259,7 +259,7 @@ static void __init mps2_timer_init(struct device_node *np) ret = mps2_clocksource_init(np); if (!ret) { has_clocksource = 1; - return; + return 0; } } @@ -267,9 +267,11 @@ static void __init mps2_timer_init(struct device_node *np) ret = mps2_clockevent_init(np); if (!ret) { has_clockevent = 1; - return; + return 0; } } + + return 0; } -CLOCKSOURCE_OF_DECLARE(mps2_timer, "arm,mps2-timer", mps2_timer_init); +CLOCKSOURCE_OF_DECLARE_RET(mps2_timer, "arm,mps2-timer", mps2_timer_init); -- 1.9.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: daniel.lezcano@linaro.org (Daniel Lezcano) Date: Mon, 20 Jun 2016 11:26:59 +0200 Subject: [PATCH V3] clocksource/drivers/mps2-timer: Convert init function to return error In-Reply-To: <20160620091506.GO9711@e106497-lin.cambridge.arm.com> References: <20160620091506.GO9711@e106497-lin.cambridge.arm.com> Message-ID: <1466414820-19574-1-git-send-email-daniel.lezcano@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano --- drivers/clocksource/mps2-timer.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/clocksource/mps2-timer.c b/drivers/clocksource/mps2-timer.c index 3d33a5e..c303fa9 100644 --- a/drivers/clocksource/mps2-timer.c +++ b/drivers/clocksource/mps2-timer.c @@ -250,7 +250,7 @@ out: return ret; } -static void __init mps2_timer_init(struct device_node *np) +static int __init mps2_timer_init(struct device_node *np) { static int has_clocksource, has_clockevent; int ret; @@ -259,7 +259,7 @@ static void __init mps2_timer_init(struct device_node *np) ret = mps2_clocksource_init(np); if (!ret) { has_clocksource = 1; - return; + return 0; } } @@ -267,9 +267,11 @@ static void __init mps2_timer_init(struct device_node *np) ret = mps2_clockevent_init(np); if (!ret) { has_clockevent = 1; - return; + return 0; } } + + return 0; } -CLOCKSOURCE_OF_DECLARE(mps2_timer, "arm,mps2-timer", mps2_timer_init); +CLOCKSOURCE_OF_DECLARE_RET(mps2_timer, "arm,mps2-timer", mps2_timer_init); -- 1.9.1