linux-kernel - Re: [tip:irq/core 39/46] drivers/irqchip/irq-loongarch-avec.c:82:17: error: implicit declaration of function 'loongson_send_ipi

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Date: Mon, 24 Jun 2024 15:45:44 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: kernel test robot <lkp@...el.com>, Tianyang Zhang
 <zhangtianyang@...ngson.cn>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
 x86@...nel.org, Jianmin Lv <lvjianmin@...ngson.cn>, Liupu Wang
 <wangliupu@...ngson.cn>
Subject: Re: [tip:irq/core 39/46]
 drivers/irqchip/irq-loongarch-avec.c:82:17: error: implicit declaration of
 function 'loongson_send_ipi_single'

On Mon, Jun 24 2024 at 05:06, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
> head:   c9d269469d2b9a06559cdc84d12dd3fb4d552581
> commit: 760d7e719499d64beea62bfcf53938fb233bb6e7 [39/46] Loongarch: Support loongarch avec
> config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20240624/202406240451.ygBFNyJ3-lkp@intel.com/config)
> compiler: loongarch64-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240624/202406240451.ygBFNyJ3-lkp@intel.com/reproduce)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202406240451.ygBFNyJ3-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
>    drivers/irqchip/irq-loongarch-avec.c: In function 'loongarch_avec_sync':
>>> drivers/irqchip/irq-loongarch-avec.c:82:17: error: implicit declaration of function 'loongson_send_ipi_single' [-Werror=implicit-function-declaration]
>       82 |                 loongson_send_ipi_single(adata->prev_cpu, SMP_CLEAR_VECT);
>          |                 ^~~~~~~~~~~~~~~~~~~~~~~~
>>> drivers/irqchip/irq-loongarch-avec.c:82:59: error: 'SMP_CLEAR_VECT' undeclared (first use in this function)
>       82 |                 loongson_send_ipi_single(adata->prev_cpu, SMP_CLEAR_VECT);
>          |                                                           ^~~~~~~~~~~~~~
>    drivers/irqchip/irq-loongarch-avec.c:82:59: note: each undeclared identifier is reported only once for each function it appears in
>    drivers/irqchip/irq-loongarch-avec.c: In function 'complete_irq_moving':
>    drivers/irqchip/irq-loongarch-avec.c:173:55: error: 'SMP_CLEAR_VECT' undeclared (first use in this function)
>      173 |                         loongson_send_ipi_single(cpu, SMP_CLEAR_VECT);
>          |                                                       ^~~~~~~~~~~~~~

So this code was never built with CONFIG_SMP=n.

Can the loongson folks please send me a delta patch ASAP, otherwise I'm
going to revert it.

Thanks,

        tglx