[FSL P50x0] Kernel 6.9-rc1 compiling issue

[Christian Zigotzky]

Thanks a lot for the hint.

Could you please add #include <asm/kexec.h> to 
arch/powerpc/platforms/85xx/smp.c for the next PowerPC fixes?

Christian


On 25 March 2024 at 07:43 am, Christophe Leroy wrote:
> Hi,
>
> Le 25/03/2024 à 06:18, Christian Zigotzky a écrit :
>> I have created a patch:
>>
>> --- a/arch/powerpc/platforms/85xx/smp.c 2024-03-25 06:14:02.201209476 +0100
>> +++ b/arch/powerpc/platforms/85xx/smp.c 2024-03-25 06:10:04.421425931 +0100
>> @@ -393,6 +393,7 @@ static void mpc85xx_smp_kexec_cpu_down(i
>>           int disable_threadbit = 0;
>>           long start = mftb();
>>           long now;
>> +       int crashing_cpu = -1;
> crashing_cpu is a global variable defined in
> arch/powerpc/kernel/setup-common.c and declared in
> arch/powerpc/include/asm/kexec.h
>
> So you can't redefine crashing_cpu as a local stub.
>
> All you need to do is to add #include <asm/kexec.h> just like
> arch/powerpc/platforms/powernv/smp.c I guess.
>
> Christophe
>
>
>
>>           local_irq_disable();
>>           hard_irq_disable();
>>
>> ---
>>
>> -- Christian
>>
>>
>> On 25 March 2024 at 05:48 am, Christian Zigotzky wrote:
>>> Hi All,
>>>
>>> Compiling of the RC1 of kernel 6.9 doesn’t work anymore for our FSL
>>> P5020/P5040 boards [1] since the PowerPC updates 6.9-2 [2].
>>>
>>> Error messages:
>>>
>>> arch/powerpc/platforms/85xx/smp.c: In function
>>> 'mpc85xx_smp_kexec_cpu_down':
>>> arch/powerpc/platforms/85xx/smp.c:401:13: error: 'crashing_cpu'
>>> undeclared (first use in this function); did you mean 'crash_save_cpu'?
>>>    401 |  if (cpu == crashing_cpu && cpu_thread_in_core(cpu) != 0) {
>>>        |             ^~~~~~~~~~~~
>>>        |             crash_save_cpu
>>> arch/powerpc/platforms/85xx/smp.c:401:13: note: each undeclared
>>> identifier is reported only once for each function it appears in
>>> make[5]: *** [scripts/Makefile.build:244:
>>> arch/powerpc/platforms/85xx/smp.o] Error 1
>>> make[4]: *** [scripts/Makefile.build:485: arch/powerpc/platforms/85xx]
>>> Error 2
>>> make[3]: *** [scripts/Makefile.build:485: arch/powerpc/platforms] Error 2
>>> make[2]: *** [scripts/Makefile.build:485: arch/powerpc] Error 2
>>>
>>> ---
>>>
>>> I was able to revert it. After that the compiling works again.
>>>
>>> Could you please check the PowerPC updates 6.9-2? [2]
>>>
>>> Thanks,
>>> Christian
>>>
>>> [1] http://wiki.amiga.org/index.php?title=X5000
>>> [2]
>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.9-rc1&id=484193fecd2b6349a6fd1554d306aec646ae1a6a