Hi Laurence,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linux-sof-driver/master]
[also build test ERROR on v4.19 next-20181019]
[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/Laurence-Oberman/V3-init-main-c-Enable-watchdog_thresh-control-from-kernel-line/20181025-015902
base:   https://github.com/thesofproject/linux master
config: i386-randconfig-s1-201842 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   init/main.c: In function 'is_watchdog_thresh_setup':
>> init/main.c:1037:20: error: 'watchdog_thresh' undeclared (first use in this function)
     get_option(&str, &watchdog_thresh);
                       ^~~~~~~~~~~~~~~
   init/main.c:1037:20: note: each undeclared identifier is reported only once for each function it appears in

vim +/watchdog_thresh +1037 init/main.c

  1033	
  1034	static int __init
  1035	is_watchdog_thresh_setup(char *str)
  1036	{
> 1037		get_option(&str, &watchdog_thresh);
  1038		return 1;
  1039	}
  1040	__setup("watchdog_thresh=", is_watchdog_thresh_setup);
  1041	
  1042	

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