Hi Peter,

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on v4.4 next-20160115]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Peter-Hurley/Earlycon-cleanup/20160117-054602
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: x86_64-randconfig-x012-201603 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/tty/serial/earlycon.c: In function 'of_setup_earlycon':
>> drivers/tty/serial/earlycon.c:232:9: error: implicit declaration of function 'of_flat_dt_translate_address' [-Werror=implicit-function-declaration]
     addr = of_flat_dt_translate_address(node);
            ^
   drivers/tty/serial/earlycon.c:241:8: error: implicit declaration of function 'of_get_flat_dt_prop' [-Werror=implicit-function-declaration]
     val = of_get_flat_dt_prop(node, "reg-offset", NULL);
           ^
   drivers/tty/serial/earlycon.c:241:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     val = of_get_flat_dt_prop(node, "reg-offset", NULL);
         ^
   drivers/tty/serial/earlycon.c:244:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     val = of_get_flat_dt_prop(node, "reg-shift", NULL);
         ^
   drivers/tty/serial/earlycon.c:247:61: warning: comparison between pointer and integer
     big_endian = of_get_flat_dt_prop(node, "big-endian", NULL) != NULL ||
                                                                ^
   drivers/tty/serial/earlycon.c:249:53: warning: comparison between pointer and integer
       of_get_flat_dt_prop(node, "native-endian", NULL) != NULL);
                                                        ^
   drivers/tty/serial/earlycon.c:250:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
     val = of_get_flat_dt_prop(node, "reg-io-width", NULL);
         ^
   cc1: some warnings being treated as errors

vim +/of_flat_dt_translate_address +232 drivers/tty/serial/earlycon.c

   226		const __be32 *val;
   227		bool big_endian;
   228		u64 addr;
   229	
   230		spin_lock_init(&port->lock);
   231		port->iotype = UPIO_MEM;
 > 232		addr = of_flat_dt_translate_address(node);
   233		if (addr == OF_BAD_ADDR) {
   234			pr_warn("[%s] bad address\n", match->name);
   235			return -ENXIO;

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