tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
head:   0bc0a13aaa23f8c7a91a228935190d24af717a93
commit: c67b65870efa35e5da9506960e96b4e47a69579c [1673/1675] Input: matrix-keypad - switch to using generic device properties
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout c67b65870efa35e5da9506960e96b4e47a69579c
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/auxdisplay/ht16k33.c: In function 'ht16k33_probe':

quoted

drivers/auxdisplay/ht16k33.c:453:8: error: implicit declaration of function 'matrix_keypad_parse_of_params' [-Werror=implicit-function-declaration]

     err = matrix_keypad_parse_of_params(&client->dev, &rows, &cols);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/matrix_keypad_parse_of_params +453 drivers/auxdisplay/ht16k33.c

8992da44 Robin van der Gracht 2016-11-07  447  		goto err_fbdev_unregister;
8992da44 Robin van der Gracht 2016-11-07  448  	}
8992da44 Robin van der Gracht 2016-11-07  449  
8992da44 Robin van der Gracht 2016-11-07  450  	disable_irq_nosync(client->irq);
8992da44 Robin van der Gracht 2016-11-07  451  	rows = HT16K33_MATRIX_KEYPAD_MAX_ROWS;
8992da44 Robin van der Gracht 2016-11-07  452  	cols = HT16K33_MATRIX_KEYPAD_MAX_COLS;
8992da44 Robin van der Gracht 2016-11-07 @453  	err = matrix_keypad_parse_of_params(&client->dev, &rows, &cols);
8992da44 Robin van der Gracht 2016-11-07  454  	if (err)
8992da44 Robin van der Gracht 2016-11-07  455  		goto err_fbdev_unregister;
8992da44 Robin van der Gracht 2016-11-07  456  

:::::: The code at line 453 was first introduced by commit
:::::: 8992da44c6805d53b920fe538992eae4afd6f22e auxdisplay: ht16k33: Driver for LED controller

:::::: TO: Robin van der Gracht [off-list ref]
:::::: CC: Greg Kroah-Hartman [off-list ref]

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