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Message-ID: <20160620091506.GO9711@e106497-lin.cambridge.arm.com>
Date: Mon, 20 Jun 2016 10:15:06 +0100
From: Liviu Dudau <liviu.dudau@....com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: tglx@...utronix.de, linux-kernel@...r.kernel.org,
Sudeep Holla <sudeep.holla@....com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
"moderated list:ARM/VERSATILE EXP..."
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2 25/63] clocksource/drivers/mxs_timer: Convert init
function to return error
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 <daniel.lezcano@...aro.org>
> ---
> 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)_/¯
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