linux-kernel - Re: [PATCH v2 03/10] Clocksource: add nuc970 clocksource driver

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Message-ID: <57849D2B.60305@iommu.org>
Date:	Tue, 12 Jul 2016 15:32:59 +0800
From:	Wan Zongshun <vw@...mu.org>
To:	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org,
	Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:	Russell King <linux@...linux.org.uk>, devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org, jason@...edaemon.net,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	linux-kernel@...r.kernel.org, p.zabel@...gutronix.de,
	Thomas Gleixner <tglx@...utronix.de>,
	Wan Zongshun <mcuos.com@...il.com>
Subject: Re: [PATCH v2 03/10] Clocksource: add nuc970 clocksource driver



On 2016年07月11日 23:36, Arnd Bergmann wrote:
> On Sunday, July 10, 2016 3:27:23 PM CEST Wan Zongshun wrote:
>>
>> +config NUC900_TIMER
>> +        bool "Clocksource timer for nuc900 platform" if COMPILE_TEST
>> +        depends on ARM
>> +        select CLKSRC_OF if OF
>> +        select CLKSRC_MMIO
>> +        help
>> +          Enables the clocksource for the NUC900 platform.
>>
>
> I have put this patch into my randconfig build system and found that
> it lacks a dependency:
>
>
>
> diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
> index e18ef32776a3..59b9251eef37 100644
> --- a/drivers/clocksource/Kconfig
> +++ b/drivers/clocksource/Kconfig
> @@ -523,7 +523,7 @@ config CLKSRC_ST_LPC
>
>   config NUC900_TIMER
>           bool "Clocksource timer for nuc900 platform" if COMPILE_TEST
> -        depends on ARM
> +        depends on ARM && GENERIC_CLOCKEVENTS
>           select CLKSRC_OF if OF
>           select CLKSRC_MMIO
>           help
> 	

So this patch, I still need submit or you have merged it?

>
> Also the init function has changed its return type in linux-next:
>
>> +static void __init nuc970_timer_of_init(struct device_node *node)
>
> This now needs to return an error code or we get:
>
> ../include/linux/of.h:1004:20: error: comparison of distinct pointer types lacks a cast [-Werror]
>          .data = (fn == (fn_type)NULL) ? fn : fn  }
>
> Daniel Lezcano seems to have implemented a migration strategy, but I
> can't see what you are supposed to do here, since the
> CLOCKSOURCE_OF_DECLARE_RET macro is no longer part of linux-next.

Wait for Daniel's comments? or what should I do now?

>
> 	Arnd
>
>