linux-kernel - Re: [PATCH v1] power: reset: reboot mode: fix build error of missing ioremap/iounmap on UM

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Message-ID: <082e9630-26cb-6587-6f9f-f97c334407ca@rock-chips.com>
Date:	Tue, 16 Aug 2016 18:55:49 +0800
From:	Andy Yan <andy.yan@...k-chips.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>, sre@...nel.org
Cc:	matthias.bgg@...il.com, dbaryshkov@...il.com, richard@....at,
	alexandre.belloni@...e-electrons.com, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, dwmw2@...radead.org,
	nicolas.ferre@...el.com
Subject: Re: [PATCH v1] power: reset: reboot mode: fix build error of missing
 ioremap/iounmap on UM

Hi Sebastian:


On 2016年08月12日 20:48, Krzysztof Kozlowski wrote:
> On 08/12/2016 12:01 PM, Andy Yan wrote:
>> commit 4fcd504edbf7 ("power: reset: add reboot mode driver") uses api from
>> syscon, and syscon uses ioremap/iounmap which depends on HAS_IOMEM, so
>> let's depend on MFD_SYSCON instead of selecting it directly to avoid the
>> um-allyesconfig like build error on archs that without iomem:
>>
>> drivers/mfd/syscon.c: In function 'of_syscon_register':
>> drivers/mfd/syscon.c:67:9: error: implicit declaration of function 'ioremap' [-Werror=implicit-function-declaration]
>>    base = ioremap(res.start, resource_size(&res));
>>           ^
>> drivers/mfd/syscon.c:67:7: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>>    base = ioremap(res.start, resource_size(&res));
>>         ^
>> drivers/mfd/syscon.c:109:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
>>    iounmap(base);
>>    ^
>>
>> Reported-by: Kbuild test robot <fengguang.wu@...el.com>
>> Fixes: 4fcd504edbf7("power: reset: add reboot mode driver")
>> Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
>>
>> ---
>>
>> Changes in v1:
>> - let this driver depend on MFD_SYSCON
>> - add Reported-by tag, which suggested by Krzysztof Kozlowski
>> - add Fixes tag, which suggested by Matthias Brugger
>>
>>   drivers/power/reset/Kconfig | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>
> Best regards,
> Krzysztof
>
>
>



  Will you please take this patch to avoid the Kbuild test robot warning ?

   Thanks