linux-kernel - ld.lld: error: undefined symbol: uart_try_toggle

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Message-ID: <202209180427.oIya9Ucz-lkp@intel.com>
Date:   Sun, 18 Sep 2022 04:36:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Qin Jian <qinjian@...lus1.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: ld.lld: error: undefined symbol: uart_try_toggle_sysrq

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a335366bad1364a07f49df9da1fdfa6d411a5f39
commit: 0aa94eea8d955c82014e5368a843da93f1dc58f8 ARM: sunplus: Add initial support for Sunplus SP7021 SoC
date:   2 months ago
config: arm-randconfig-r002-20220918
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0aa94eea8d955c82014e5368a843da93f1dc58f8
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0aa94eea8d955c82014e5368a843da93f1dc58f8
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: uart_try_toggle_sysrq
   >>> referenced by serial_core.h:481 (include/linux/serial_core.h:481)
   >>>               tty/serial/sunplus-uart.o:(sunplus_uart_irq) in archive drivers/built-in.a

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SERIAL_SUNPLUS
   Depends on [n]: TTY [=n] && HAS_IOMEM [=y] && (ARCH_SUNPLUS [=y] || COMPILE_TEST [=y])
   Selected by [y]:
   - SOC_SP7021 [=y] && ARCH_SUNPLUS [=y]
   WARNING: unmet direct dependencies detected for SERIAL_SUNPLUS_CONSOLE
   Depends on [n]: TTY [=n] && HAS_IOMEM [=y] && SERIAL_SUNPLUS [=y]
   Selected by [y]:
   - SOC_SP7021 [=y] && ARCH_SUNPLUS [=y]

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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