Hi,

[auto build test WARNING on spi/for-next]
[also build test WARNING on v4.7-rc5 next-20160701]
[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/Bhaktipriya-Shridhar/spi-spi-topcliff-pch-Remove-deprecated-create_singlethread_workqueue/20160702-191734
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 4.9.0
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
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

All warnings (new ones prefixed by >>):

   drivers/spi/spi-topcliff-pch.c: In function 'pch_spi_get_resources':
>> drivers/spi/spi-topcliff-pch.c:1283:1: warning: label 'err_return' defined but not used [-Wunused-label]
    err_return:
    ^

vim +/err_return +1283 drivers/spi/spi-topcliff-pch.c

e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1267  
f016aeb6 drivers/spi/spi-topcliff-pch.c Tomoya MORINAGA 2011-06-07  1268  static int pch_spi_get_resources(struct pch_spi_board_data *board_dat,
f016aeb6 drivers/spi/spi-topcliff-pch.c Tomoya MORINAGA 2011-06-07  1269  				 struct pch_spi_data *data)
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1270  {
f016aeb6 drivers/spi/spi-topcliff-pch.c Tomoya MORINAGA 2011-06-07  1271  	int retval = 0;
f016aeb6 drivers/spi/spi-topcliff-pch.c Tomoya MORINAGA 2011-06-07  1272  
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1273  	dev_dbg(&board_dat->pdev->dev, "%s ENTRY\n", __func__);
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1274  
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1275  
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1276  	/* reset PCH SPI h/w */
f016aeb6 drivers/spi/spi-topcliff-pch.c Tomoya MORINAGA 2011-06-07  1277  	pch_spi_reset(data->master);
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1278  	dev_dbg(&board_dat->pdev->dev,
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1279  		"%s pch_spi_reset invoked successfully\n", __func__);
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1280  
65308c46 drivers/spi/spi_topcliff_pch.c Grant Likely    2010-09-29  1281  	dev_dbg(&board_dat->pdev->dev, "%s data->irq_reg_sts=true\n", __func__);
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1282  
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08 @1283  err_return:
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1284  	if (retval != 0) {
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1285  		dev_err(&board_dat->pdev->dev,
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1286  			"%s FAIL:invoking pch_spi_free_resources\n", __func__);
f016aeb6 drivers/spi/spi-topcliff-pch.c Tomoya MORINAGA 2011-06-07  1287  		pch_spi_free_resources(board_dat, data);
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1288  	}
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1289  
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1290  	dev_dbg(&board_dat->pdev->dev, "%s Return=%d\n", __func__, retval);
e8b17b5b drivers/spi/spi_topcliff_pch.c Masayuki Ohtake 2010-10-08  1291  

:::::: The code at line 1283 was first introduced by commit
:::::: e8b17b5b3f30252b5470dbbf54bc251ddc7fac17 spi/topcliff: Add topcliff platform controller hub (PCH) spi bus driver

:::::: TO: Masayuki Ohtake <masa-korg@dsn.okisemi.com>
:::::: CC: Grant Likely <grant.likely@secretlab.ca>

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