On 11/23/20 8:51 PM, Bjorn Andersson wrote:
> On Mon 23 Nov 19:30 CST 2020, Randy Dunlap wrote:
>
>> The Kconfig symbol ARM_QCOM_SPM_CPUIDLE wildly selects other
>> Kconfig symbols when it should not.
>> This causes kconfig warnings and subsequent build errors,
>> as listed below, so modify this symbol's Kconfig entry to
>> constrain and tame it.
>>
>> WARNING: unmet direct dependencies detected for QCOM_SCM
>> Depends on [n]: ARM [=y] && HAVE_ARM_SMCCC [=n] || ARM64
>> Selected by [y]:
>> - ARM_QCOM_SPM_CPUIDLE [=y] && CPU_IDLE [=y] && (ARM [=y] || ARM64) && (ARCH_QCOM [=n] || COMPILE_TEST [=y]) && !ARM64
>>
>> WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND
>> Depends on [n]: ARCH_SUSPEND_POSSIBLE [=n]
>> Selected by [y]:
>> - ARM_QCOM_SPM_CPUIDLE [=y] && CPU_IDLE [=y] && (ARM [=y] || ARM64) && (ARCH_QCOM [=n] || COMPILE_TEST [=y]) && !ARM64
>>
>> and
>>
>> arm-linux-gnueabi-ld: arch/arm/kernel/sleep.o: in function `__cpu_suspend':
>> (.text+0x68): undefined reference to `cpu_sa110_suspend_size'
>> arm-linux-gnueabi-ld: arch/arm/kernel/suspend.o: in function `__cpu_suspend_save':
>> suspend.c:(.text+0x138): undefined reference to `cpu_sa110_do_suspend'
>> arm-linux-gnueabi-ld: suspend.c:(.text+0x170): undefined reference to `cpu_sa110_do_resume'
>> arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-smc.o: in function `__scm_smc_do_quirk':
>> qcom_scm-smc.c:(.text+0x54): undefined reference to `__arm_smccc_smc'
>> arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call':
>> qcom_scm-legacy.c:(.text+0x168): undefined reference to `__arm_smccc_smc'
>> arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call_atomic':
>> qcom_scm-legacy.c:(.text+0x2e0): undefined reference to `__arm_smccc_smc'
>>
>> Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver")
>> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>> Cc: linux-pm@xxxxxxxxxxxxxxx
>> Cc: Andy Gross <agross@xxxxxxxxxx>
>> Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
>> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
>> Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
>> Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
>> Cc: Stephan Gerhold <stephan@xxxxxxxxxxx>
>> Cc: Lina Iyer <ilina@xxxxxxxxxxxxxx>
>> Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
>> Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
>> ---
>> drivers/cpuidle/Kconfig.arm | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> --- linux-next-20201123.orig/drivers/cpuidle/Kconfig.arm
>> +++ linux-next-20201123/drivers/cpuidle/Kconfig.arm
>> @@ -108,10 +108,11 @@ config ARM_TEGRA_CPUIDLE
>> config ARM_QCOM_SPM_CPUIDLE
>> bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
>> depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64
>> + depends on PM
>> select ARM_CPU_SUSPEND
>> select CPU_IDLE_MULTIPLE_DRIVERS
>> select DT_IDLE_STATES
>> - select QCOM_SCM
>> + select QCOM_SCM if HAVE_ARM_SMCCC
>
> I presume the trigger for this error is that 'd0511b5496c0 ("firmware:
> QCOM_SCM: Allow qcom_scm driver to be loadable as a permenent module")'
> made QCOM_SCM user selectable and described the dependency on
> HAVE_ARM_SMCCC..
I don't quite see that as contributing to the problem, but maybe
it's just too late at night for me to see it.
> So given that, and the fact that this driver doesn't do anything without
> QCOM_SCM, can we instead make it "depends on QCOM_SCM"? I believe it
> would inherit the dependency of HAVE_ARM_SMCCC in this case?
Sure, I'll respin it like that.
> Regards,
> Bjorn
>
>> help
>> Select this to enable cpuidle for Qualcomm processors.
>> The Subsystem Power Manager (SPM) controls low power modes for the
thanks.
--
~Randy
