linux-kernel - Re: [PATCH 03/22] clocksource/drivers/rockchip: Make the driver more compatible

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Message-ID: <56379016.1080601@linaro.org>
Date:	Mon, 2 Nov 2015 17:32:22 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>, linux-arm-kernel@...ts.infradead.org
Cc:	tglx@...utronix.de, Heiko Stuebner <heiko@...ech.de>,
	linux-kernel@...r.kernel.org,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	john.stultz@...aro.org, Caesar Wang <wxt@...k-chips.com>
Subject: Re: [PATCH 03/22] clocksource/drivers/rockchip: Make the driver more
 compatible

On 11/02/2015 04:33 PM, Arnd Bergmann wrote:
> On Monday 02 November 2015 13:56:31 Daniel Lezcano wrote:
>>   static inline void rk_timer_disable(struct clock_event_device *ce)
>>   {
>>          writel_relaxed(TIMER_DISABLE, rk_base(ce) + TIMER_CONTROL_REG);
>> -       dsb();
>> +       dsb(sy);
>>   }
>>
>>   static inline void rk_timer_enable(struct clock_event_device *ce, u32 flags)
>>   {
>>          writel_relaxed(TIMER_ENABLE | TIMER_INT_UNMASK | flags,
>>                         rk_base(ce) + TIMER_CONTROL_REG);
>> -       dsb();
>> +       dsb(sy);
>>   }
>>
>>
>
> This will fail the compile test, because dsb() is not available on non-ARM
> architectures. Would it be enough to just use the normal writel() accessor
> here?

That's a good question and I believe we can remove it but I have to 
setup a rockchip board before doing the changes in order to test.

I the meantime added the COMPILE_TEST option but restricted it to ARM 
and ARM64.



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