linux-kernel - mainline build failure due to fa84f89395e0 ("irqchip/loongson-liointc: Fix build error for LoongArch")

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Message-ID: <Yps1Jw6PJdLBya1W@debian>
Date:   Sat, 4 Jun 2022 11:34:15 +0100
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Huacai Chen <chenhuacai@...ngson.cn>,
        Marc Zyngier <maz@...nel.org>, WANG Xuerui <git@...0n.name>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org
Subject: mainline build failure due to fa84f89395e0
 ("irqchip/loongson-liointc: Fix build error for LoongArch")

Hi All,

The latest mainline kernel branch fails to build for "mips loongson2k_defconfig"
with the error:

drivers/irqchip/irq-loongson-liointc.c: In function 'liointc_chained_handle_irq':
drivers/irqchip/irq-loongson-liointc.c:60:20: error: implicit declaration of function 'cpu_logical_map' [-Werror=implicit-function-declaration]
   60 |         int core = cpu_logical_map(smp_processor_id()) % LIOINTC_NUM_CORES;


git bisect pointed to fa84f89395e0 ("irqchip/loongson-liointc: Fix build error for LoongArch")

And, reverting it on top of mainline branch has fixed the build failure.

--
Regards
Sudip