linux-kernel - Re: Build error with !CONFIG_SMP in v4.2-rc1 on arm multi_v7

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Message-ID: <55A02B17.40705@ti.com>
Date:	Fri, 10 Jul 2015 15:29:11 -0500
From:	Dave Gerlach <d-gerlach@...com>
To:	Stephen Boyd <sboyd@...eaurora.org>,
	<linux-arm-msm@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	Lina Iyer <lina.iyer@...aro.org>, Kumar Gala <galak@...eaurora.org>
Subject: Re: Build error with !CONFIG_SMP in v4.2-rc1 on arm multi_v7_defconfig

On 07/10/2015 02:36 PM, Stephen Boyd wrote:
> On 07/10/2015 12:31 PM, Dave Gerlach wrote:
>> Hello,
>> I am seeing the following error when building v4.2-rc1 for arm with
>> multi_v7_defconfig with CONFIG_SMP=n:
>>
>>  LINK    vmlinux
>>   LD      vmlinux.o
>>   MODPOST vmlinux.o
>>   GEN     .version
>>   CHK     include/generated/compile.h
>>   UPD     include/generated/compile.h
>>   CC      init/version.o
>>   LD      init/built-in.o
>> drivers/built-in.o: In function `qcom_pm_collapse':
>> :(.text+0xaf44c): undefined reference to `qcom_scm_cpu_power_down'
>> drivers/built-in.o: In function `qcom_cpuidle_init':
>> :(.init.text+0x9508): undefined reference to `qcom_scm_set_warm_boot_addr'
>> make: *** [vmlinux] Error 1
>>
>>
>> It appears the calling functions in drivers/soc/qcom/spm.c get included by
>> CONFIG_QCOM_PM which is part of multi_v7_defconfig but the missing functions
>> from drivers/firmware/qcom_scm.c only get included by CONFIG_QCOM_SCM if SMP is
>> selected. I am not sure if the correct approach is to remove CONFIG_QCOM_PM from
>> multi_v7_defconfig or to remove 'if SMP' from CONFIG_QCOM_SCM, or something else
>> entirely. Thoughts?
>>
>>
> 
> CONFIG_QCOM_PM should select CONFIG_QCOM_SCM unconditionally.
> 

Ok thanks, I can send a quick patch.

Regards,
Dave

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