[PATCH] powerpc/mobility: Fix node detach/rename problem

[kbuild test robot]

Hi Michael,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.18-rc6 next-20180727]
[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/Michael-Bringmann/powerpc-mobility-Fix-node-detach-rename-problem/20180729-213517
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_detach_node':
>> arch/powerpc/platforms/pseries/dlpar.c:276:9: error: passing argument 1 of 'memset' discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers]
     memset(dn->name, 0, strlen(dn->name));
            ^~
   In file included from include/linux/string.h:20:0,
                    from arch/powerpc/include/asm/paca.h:19,
                    from arch/powerpc/include/asm/current.h:16,
                    from include/linux/mutex.h:14,
                    from include/linux/notifier.h:14,
                    from arch/powerpc/platforms/pseries/dlpar.c:16:
   arch/powerpc/include/asm/string.h:23:15: note: expected 'void *' but argument is of type 'const char *'
    extern void * memset(void *,int,__kernel_size_t);
                  ^~~~~~
   cc1: all warnings being treated as errors

vim +276 arch/powerpc/platforms/pseries/dlpar.c

   259	
   260	int dlpar_detach_node(struct device_node *dn)
   261	{
   262		struct device_node *child;
   263		int rc;
   264	
   265		child = of_get_next_child(dn, NULL);
   266		while (child) {
   267			dlpar_detach_node(child);
   268			child = of_get_next_child(dn, child);
   269		}
   270	
   271		rc = of_detach_node(dn);
   272		if (rc)
   273			return rc;
   274	
   275		dn->phandle = 0;
 > 276		memset(dn->name, 0, strlen(dn->name));
   277	
   278		return 0;
   279	}
   280	

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