linux-kernel - Re: [PATCH RESEND] irq: export irq_check_status

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Date:   Thu, 21 Jan 2021 18:07:22 -1000
From:   Brooke Basile <brookebasile@...il.com>
To:     Yun Levi <ppbuk5246@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RESEND] irq: export irq_check_status_bit symbol

On 1/5/21 10:57 PM, Yun Levi wrote:
> Because of the missing export symbol for irq_chekc_status_bit,
> Building arm_spe_pmu.ko is a failure on the modpost step.
> 
> Below is an error message I saw:
> ERROR:modpost: "irq_check_status_bit" [drivers/perf/arm_spe_pmu.ko] undefined!
> make[4]: *** [scripts/Makefile.modpost:111: Module.symvers] Error 1
> make[4]: *** Deleting file 'Module.symvers'
> make[3]: *** [Makefile:1396: modules] Error 2
> make[2]: *** [debian/rules:7: build-arch] Error 2
> dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
> make[1]: *** [scripts/Makefile.package:83: bindeb-pkg] Error 2
> 
> Signed-off-by: Levi Yun <ppbuk5246@...il.com>
> ---
>   kernel/irq/manage.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
> index ab8567f32501..dec3f73e8db9 100644
> --- a/kernel/irq/manage.c
> +++ b/kernel/irq/manage.c
> @@ -2859,3 +2859,4 @@ bool irq_check_status_bit(unsigned int irq,
> unsigned int bitmask)
>          rcu_read_unlock();
>          return res;
>   }
> +EXPORT_SYMBOL_GPL(irq_check_status_bit);
> --
> 2.27.0
> 
> 

Hi,

I ran into this issue while compiling 5.11-rc4 for my RPi 4B.  Applying 
this patch fixed the breakage.

Thanks for the fix!

Tested-by: Brooke Basile <brookebasile@...il.com>

Best,
Brooke Basile