linux-kernel - [tip:irq/urgent 2/2] drivers/irqchip/irq-gic-v3.c:551:40: error: 'cpu' undeclared

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Message-ID: <201609200650.6xWkX5Rd%fengguang.wu@intel.com>
Date:   Tue, 20 Sep 2016 06:44:53 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     James Morse <james.morse@....com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Thomas Gleixner <tglx@...utronix.de>
Subject: [tip:irq/urgent 2/2] drivers/irqchip/irq-gic-v3.c:551:40: error:
 'cpu' undeclared

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/urgent
head:   7e947926fc3bfa095644c2933ec209128cbfd61e
commit: 7e947926fc3bfa095644c2933ec209128cbfd61e [2/2] irqchip/gicv3: Silence noisy DEBUG_PER_CPU_MAPS warning
config: arm64-allnoconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 7e947926fc3bfa095644c2933ec209128cbfd61e
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   In file included from drivers/irqchip/irq-gic-v3.c:39:0:
   drivers/irqchip/irq-gic-v3.c: In function 'gic_compute_target_list':
>> drivers/irqchip/irq-gic-v3.c:551:40: error: 'cpu' undeclared (first use in this function)
     unsigned long mpidr = cpu_logical_map(cpu);
                                           ^
   arch/arm64/include/asm/smp_plat.h:43:51: note: in definition of macro 'cpu_logical_map'
    #define cpu_logical_map(cpu)    __cpu_logical_map[cpu]
                                                      ^~~
   drivers/irqchip/irq-gic-v3.c:551:40: note: each undeclared identifier is reported only once for each function it appears in
     unsigned long mpidr = cpu_logical_map(cpu);
                                           ^
   arch/arm64/include/asm/smp_plat.h:43:51: note: in definition of macro 'cpu_logical_map'
    #define cpu_logical_map(cpu)    __cpu_logical_map[cpu]
                                                      ^~~

vim +/cpu +551 drivers/irqchip/irq-gic-v3.c

6670a6d8 Richard Cochran       2016-07-13  545  	return 0;
021f6537 Marc Zyngier          2014-06-30  546  }
021f6537 Marc Zyngier          2014-06-30  547  
021f6537 Marc Zyngier          2014-06-30  548  static u16 gic_compute_target_list(int *base_cpu, const struct cpumask *mask,
f6c86a41 Jean-Philippe Brucker 2015-10-01  549  				   unsigned long cluster_id)
021f6537 Marc Zyngier          2014-06-30  550  {
f6c86a41 Jean-Philippe Brucker 2015-10-01 @551  	unsigned long mpidr = cpu_logical_map(cpu);
7e947926 James Morse           2016-09-19  552  	int next_cpu, cpu = *base_cpu;
021f6537 Marc Zyngier          2014-06-30  553  	u16 tlist = 0;
021f6537 Marc Zyngier          2014-06-30  554  

:::::: The code at line 551 was first introduced by commit
:::::: f6c86a41e1dc2214363b00cc0eadb8a5401c892d irqchip/gic-v3: Change unsigned types for AArch32 compatibility

:::::: TO: Jean-Philippe Brucker <jean-philippe.brucker@....com>
:::::: CC: Marc Zyngier <marc.zyngier@....com>

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