[PATCH] powerpc/64s: ibm,powerpc-cpu-features dt implementation

[kbuild test robot]

Hi Nicholas,

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.11 next-20170505]
[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/Nicholas-Piggin/powerpc-64s-ibm-powerpc-cpu-features-dt-implementation/20170505-111808
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-allmodconfig (attached as .config)
compiler: powerpc64-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=powerpc 

All errors (new ones prefixed by >>):

   arch/powerpc/kernel/prom.c: In function 'cpufeatures_deps_enable':
>> arch/powerpc/kernel/prom.c:457:8: error: implicit declaration of function 'of_get_flat_dt_phandle' [-Werror=implicit-function-declaration]
       if (of_get_flat_dt_phandle(d->node) == phandle) {
           ^~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/kernel/prom.c: In function 'early_init_dt_scan_cpufeatures':
>> arch/powerpc/kernel/prom.c:521:2: error: implicit declaration of function 'of_scan_flat_dt_subnodes' [-Werror=implicit-function-declaration]
     of_scan_flat_dt_subnodes(node, count_cpufeatures_subnodes,
     ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/of_get_flat_dt_phandle +457 arch/powerpc/kernel/prom.c

   451			unsigned long phandle = be32_to_cpu(prop[i]);
   452			int j;
   453	
   454			for (j = 0; j < nr_dt_cpu_features; j++) {
   455				struct dt_cpu_feature *d = &dt_cpu_features[j];
   456	
 > 457				if (of_get_flat_dt_phandle(d->node) == phandle) {
   458					cpufeatures_deps_enable(d);
   459					if (d->disabled) {
   460						f->disabled = 1;
   461						return;
   462					}
   463				}
   464			}
   465		}
   466	
   467		if (cpufeatures_process_feature(f))
   468			f->enabled = 1;
   469		else
   470			f->disabled = 1;
   471	}
   472	
   473	static int __init scan_cpufeatures_subnodes(unsigned long node,
   474						  const char *uname,
   475						  void *data)
   476	{
   477		int *count = data;
   478	
   479		process_cpufeatures_node(node, uname, *count);
   480	
   481		(*count)++;
   482	
   483		return 0;
   484	}
   485	
   486	static int __init count_cpufeatures_subnodes(unsigned long node,
   487						  const char *uname,
   488						  void *data)
   489	{
   490		int *count = data;
   491	
   492		(*count)++;
   493	
   494		return 0;
   495	}
   496	
   497	static int __init early_init_dt_scan_cpufeatures(unsigned long node,
   498						  const char *uname, int depth,
   499						  void *data)
   500	{
   501		const char *compat = of_get_flat_dt_prop(node, "compatible", NULL);
   502		const __be32 *prop;
   503		int count, i;
   504		u32 isa;
   505	
   506		/* We are scanning "ibm,powerpc-cpu-features" nodes only */
   507		if (compat == NULL || strcmp(compat, "ibm,powerpc-cpu-features") != 0)
   508			return 0;
   509	
   510		prop = of_get_flat_dt_prop(node, "isa", NULL);
   511		if (!prop) {
   512			printk("ibm,powerpc-cpu-features node has missing property \"isa\"\n");
   513			return 0;
   514		}
   515	
   516		isa = be32_to_cpup(prop);
   517	
   518		has_cpufeatures_node = 1;
   519	
   520		/* Count and allocate space for cpu features */
 > 521		of_scan_flat_dt_subnodes(node, count_cpufeatures_subnodes,
   522							&nr_dt_cpu_features);
   523		dt_cpu_features = __va(
   524			memblock_alloc(sizeof(struct dt_cpu_feature)*

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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