On 08/08/17 11:57, kbuild test robot wrote:
Hi Suzuki,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.13-rc4 next-20170807]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Suzuki-K-Poulose/perf-Support-for-ARM-DynamIQ-Shared-Unit-PMU/20170808-124822
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64

All errors (new ones prefixed by >>):

   drivers//perf/arm_dsu_pmu.c: In function 'dsu_pmu_dt_get_cpus':
drivers//perf/arm_dsu_pmu.c:685:9: error: implicit declaration of function 
'of_device_node_get_cpu' [-Werror=implicit-function-declaration]
      cpu = of_device_node_get_cpu(cpu_node);
            ^~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/of_device_node_get_cpu +685 drivers//perf/arm_dsu_pmu.c

   669  
   670  /**
   671   * dsu_pmu_dt_get_cpus: Get the list of CPUs in the cluster.
   672   */
   673  static int dsu_pmu_dt_get_cpus(struct device_node *dev, cpumask_t *mask)
   674  {
   675          int i = 0, n, cpu;
   676          struct device_node *cpu_node;
   677  
   678          n = of_count_phandle_with_args(dev, "cpus", NULL);
   679          if (n <= 0)
   680                  return -ENODEV;
   681          for (; i < n; i++) {
   682                  cpu_node = of_parse_phandle(dev, "cpus", i);
   683                  if (!cpu_node)
   684                          break;
 > 685                       cpu = of_device_node_get_cpu(cpu_node);

I have fixed this locally, in for v5.

Suzuki

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