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Subjectarch/arm/mach-s3c/irq-s3c24xx.c:683:13: warning: no previous prototype for 's3c2410_init_irq'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f40ddce88593482919761f74910f42f4b84c004b
commit: 71b9114d2c13a648fbe6523dd859e611c316ad90 ARM: s3c: move into a common directory
date: 6 months ago
config: arm-randconfig-r034-20210221 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b9114d2c13a648fbe6523dd859e611c316ad90
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 71b9114d2c13a648fbe6523dd859e611c316ad90
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

arch/arm/mach-s3c/irq-s3c24xx.c:360:39: warning: no previous prototype for 's3c24xx_handle_irq' [-Wmissing-prototypes]
360 | asmlinkage void __exception_irq_entry s3c24xx_handle_irq(struct pt_regs *regs)
| ^~~~~~~~~~~~~~~~~~
>> arch/arm/mach-s3c/irq-s3c24xx.c:683:13: warning: no previous prototype for 's3c2410_init_irq' [-Wmissing-prototypes]
683 | void __init s3c2410_init_irq(void)
| ^~~~~~~~~~~~~~~~
arch/arm/mach-s3c/irq-s3c24xx.c:961:13: warning: no previous prototype for 's3c2440_init_irq' [-Wmissing-prototypes]
961 | void __init s3c2440_init_irq(void)
| ^~~~~~~~~~~~~~~~
arch/arm/mach-s3c/irq-s3c24xx.c:1034:13: warning: no previous prototype for 's3c2442_init_irq' [-Wmissing-prototypes]
1034 | void __init s3c2442_init_irq(void)
| ^~~~~~~~~~~~~~~~
arch/arm/mach-s3c/irq-s3c24xx.c:1308:12: warning: no previous prototype for 's3c2410_init_intc_of' [-Wmissing-prototypes]
1308 | int __init s3c2410_init_intc_of(struct device_node *np,
| ^~~~~~~~~~~~~~~~~~~~
arch/arm/mach-s3c/irq-s3c24xx.c:1330:12: warning: no previous prototype for 's3c2416_init_intc_of' [-Wmissing-prototypes]
1330 | int __init s3c2416_init_intc_of(struct device_node *np,
| ^~~~~~~~~~~~~~~~~~~~


vim +/s3c2410_init_irq +683 arch/arm/mach-s3c/irq-s3c24xx.c

a21765a70ec06b arch/arm/plat-s3c24xx/irq.c Ben Dooks 2007-02-11 682
f182aa1dfa6283 arch/arm/mach-s3c24xx/irq.c Heiko Stuebner 2013-03-07 @683 void __init s3c2410_init_irq(void)
1f629b7a3ced8e arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 684 {
1f629b7a3ced8e arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 685 #ifdef CONFIG_FIQ
1f629b7a3ced8e arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 686 init_FIQ(FIQ_START);
1f629b7a3ced8e arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 687 #endif
a21765a70ec06b arch/arm/plat-s3c24xx/irq.c Ben Dooks 2007-02-11 688
658dc8fb9cbc77 drivers/irqchip/irq-s3c24xx.c Heiko Stuebner 2013-04-04 689 s3c_intc[0] = s3c24xx_init_intc(NULL, &init_s3c2410base[0], NULL,
658dc8fb9cbc77 drivers/irqchip/irq-s3c24xx.c Heiko Stuebner 2013-04-04 690 0x4a000000);
658dc8fb9cbc77 drivers/irqchip/irq-s3c24xx.c Heiko Stuebner 2013-04-04 691 if (IS_ERR(s3c_intc[0])) {
1f629b7a3ced8e arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 692 pr_err("irq: could not create main interrupt controller\n");
1f629b7a3ced8e arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 693 return;
a21765a70ec06b arch/arm/plat-s3c24xx/irq.c Ben Dooks 2007-02-11 694 }
a21765a70ec06b arch/arm/plat-s3c24xx/irq.c Ben Dooks 2007-02-11 695
658dc8fb9cbc77 drivers/irqchip/irq-s3c24xx.c Heiko Stuebner 2013-04-04 696 s3c_intc[1] = s3c24xx_init_intc(NULL, &init_s3c2410subint[0],
658dc8fb9cbc77 drivers/irqchip/irq-s3c24xx.c Heiko Stuebner 2013-04-04 697 s3c_intc[0], 0x4a000018);
658dc8fb9cbc77 drivers/irqchip/irq-s3c24xx.c Heiko Stuebner 2013-04-04 698 s3c24xx_init_intc(NULL, &init_eint[0], s3c_intc[0], 0x560000a4);
a21765a70ec06b arch/arm/plat-s3c24xx/irq.c Ben Dooks 2007-02-11 699 }
f182aa1dfa6283 arch/arm/mach-s3c24xx/irq.c Heiko Stuebner 2013-03-07 700 #endif
ef602eb53c8410 arch/arm/plat-s3c24xx/irq.c Heiko Stuebner 2013-01-29 701

:::::: The code at line 683 was first introduced by commit
:::::: f182aa1dfa6283a1193308c4917aef4a7a982b8c ARM: S3C24XX: move s3c24xx_init_irq to s3c2410_init_irq

:::::: TO: Heiko Stuebner <heiko@sntech.de>
:::::: CC: Kukjin Kim <kgene.kim@samsung.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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