tree:   git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   53262d12d1658669029ab39a63e3d314108abe66
commit: a1fd3e24d8a484b3265a6d485202afe093c058f3 percpu_rw_semaphore: reimplement to not block the readers unnecessarily
date:   2 years ago
config: blackfin-allyesconfig (attached as .config)
reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout a1fd3e24d8a484b3265a6d485202afe093c058f3
  # save the attached .config to linux build tree
  make.cross ARCH=blackfin 

All error/warnings:

   arch/blackfin/mach-bf533/boards/stamp.c: In function 'net2272_init':
>> arch/blackfin/mach-bf533/boards/stamp.c:834:2: error: implicit declaration of function 'mdelay' [-Werror=implicit-function-declaration]
   cc1: some warnings being treated as errors

vim +/mdelay +834 arch/blackfin/mach-bf533/boards/stamp.c

9be8631b Mike Frysinger 2011-05-04  818  		gpio_free(GPIO_PF0);
9be8631b Mike Frysinger 2011-05-04  819  		return ret;
9be8631b Mike Frysinger 2011-05-04  820  	}
9be8631b Mike Frysinger 2011-05-04  821  
9be8631b Mike Frysinger 2011-05-04  822  	ret = gpio_request(GPIO_PF11, "net2272");
9be8631b Mike Frysinger 2011-05-04  823  	if (ret) {
9be8631b Mike Frysinger 2011-05-04  824  		gpio_free(GPIO_PF0);
9be8631b Mike Frysinger 2011-05-04  825  		gpio_free(GPIO_PF1);
9be8631b Mike Frysinger 2011-05-04  826  		return ret;
9be8631b Mike Frysinger 2011-05-04  827  	}
9be8631b Mike Frysinger 2011-05-04  828  
9be8631b Mike Frysinger 2011-05-04  829  	gpio_direction_output(GPIO_PF0, 0);
9be8631b Mike Frysinger 2011-05-04  830  	gpio_direction_output(GPIO_PF1, 1);
9be8631b Mike Frysinger 2011-05-04  831  
9be8631b Mike Frysinger 2011-05-04  832  	/* Reset the USB chip */
9be8631b Mike Frysinger 2011-05-04  833  	gpio_direction_output(GPIO_PF11, 0);
9be8631b Mike Frysinger 2011-05-04 @834  	mdelay(2);
9be8631b Mike Frysinger 2011-05-04  835  	gpio_set_value(GPIO_PF11, 1);
9be8631b Mike Frysinger 2011-05-04  836  #endif
9be8631b Mike Frysinger 2011-05-04  837  
9be8631b Mike Frysinger 2011-05-04  838  	return 0;
9be8631b Mike Frysinger 2011-05-04  839  }
9be8631b Mike Frysinger 2011-05-04  840  
1394f032 Bryan Wu       2007-05-06  841  static int __init stamp_init(void)
1394f032 Bryan Wu       2007-05-06  842  {

:::::: The code at line 834 was first introduced by commit
:::::: 9be8631b8a7d11fa6d206fcf0a7a2005ed39f41b Blackfin: net2272: move pin setup to boards files

:::::: TO: Mike Frysinger <vapier@gentoo.org>
:::::: CC: Mike Frysinger <vapier@gentoo.org>

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