From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752440AbcFTJQk (ORCPT ); Mon, 20 Jun 2016 05:16:40 -0400 Received: from foss.arm.com ([217.140.101.70]:59342 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752825AbcFTJPN (ORCPT ); Mon, 20 Jun 2016 05:15:13 -0400 Date: Mon, 20 Jun 2016 10:15:06 +0100 From: Liviu Dudau To: Daniel Lezcano Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org, Sudeep Holla , Lorenzo Pieralisi , "moderated list:ARM/VERSATILE EXP..." Subject: Re: [PATCH V2 25/63] clocksource/drivers/mxs_timer: Convert init function to return error Message-ID: <20160620091506.GO9711@e106497-lin.cambridge.arm.com> References: <1466112442-31105-1-git-send-email-daniel.lezcano@linaro.org> <1466112442-31105-26-git-send-email-daniel.lezcano@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1466112442-31105-26-git-send-email-daniel.lezcano@linaro.org> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 16, 2016 at 11:26:44PM +0200, Daniel Lezcano wrote: > 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 ++++++---- > drivers/clocksource/mxs_timer.c | 2 +- > 2 files changed, 7 insertions(+), 5 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); > diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c > index f5ce296..16cf53b 100644 > --- a/drivers/clocksource/mxs_timer.c > +++ b/drivers/clocksource/mxs_timer.c > @@ -226,7 +226,7 @@ static int __init mxs_clocksource_init(struct clk *timer_clk) > return 0; > } > > -static void __init mxs_timer_init(struct device_node *np) > +static int __init mxs_timer_init(struct device_node *np) > { > struct clk *timer_clk; > int irq; > -- > 1.9.1 > This patch needs rework as it is changing (incompletely) two files that have different maintainers. Best regards, Liviu -- ==================== | I would like to | | fix the world, | | but they're not | | giving me the | \ source code! / --------------- ¯\_(ツ)_/¯