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Date:   Fri, 23 Dec 2016 19:15:43 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     kbuild-all@...org, jarkko.nikula@...ux.intel.com,
        wsa@...-dreams.de, mika.westerberg@...ux.intel.com,
        andriy.shevchenko@...ux.intel.com, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [v1] i2c: busses: i2c-designware-pcidrv:- Unmap region obtained
 by pcim_iomap_regions

Hi Arvind,

[auto build test WARNING on wsa/i2c/for-next]
[also build test WARNING on v4.9 next-20161223]
[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/Arvind-Yadav/i2c-busses-i2c-designware-pcidrv-Unmap-region-obtained-by-pcim_iomap_regions/20161223-185314
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: x86_64-randconfig-x007-201651 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/i2c/busses/i2c-designware-pcidrv.c: In function 'i2c_dw_pci_probe':
>> drivers/i2c/busses/i2c-designware-pcidrv.c:285:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^

vim +285 drivers/i2c/busses/i2c-designware-pcidrv.c

fe20ff5c Dirk Brandewie  2011-10-06  269  	adap->class = 0;
8eb5c87a Dustin Byford   2015-10-23  270  	ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev));
fe20ff5c Dirk Brandewie  2011-10-06  271  	adap->nr = controller->bus_num;
089c729a Mika Westerberg 2014-02-19  272  
d80d1341 Jarkko Nikula   2015-10-12  273  	r = i2c_dw_probe(dev);
d80d1341 Jarkko Nikula   2015-10-12  274  	if (r)
5c99d5d6 Arvind Yadav    2016-12-23  275  		goto error;
fe20ff5c Dirk Brandewie  2011-10-06  276  
43452335 Mika Westerberg 2013-04-10  277  	pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);
43452335 Mika Westerberg 2013-04-10  278  	pm_runtime_use_autosuspend(&pdev->dev);
be58eda7 Mika Westerberg 2014-02-04  279  	pm_runtime_put_autosuspend(&pdev->dev);
18dbdda8 Dirk Brandewie  2011-10-06  280  	pm_runtime_allow(&pdev->dev);
18dbdda8 Dirk Brandewie  2011-10-06  281  
fe20ff5c Dirk Brandewie  2011-10-06  282  	return 0;
5c99d5d6 Arvind Yadav    2016-12-23  283  error:
5c99d5d6 Arvind Yadav    2016-12-23  284  	pcim_iounmap_regions(pdev, 1 << 0);
fe20ff5c Dirk Brandewie  2011-10-06 @285  }
fe20ff5c Dirk Brandewie  2011-10-06  286  
0b255e92 Bill Pemberton  2012-11-27  287  static void i2c_dw_pci_remove(struct pci_dev *pdev)
fe20ff5c Dirk Brandewie  2011-10-06  288  {
fe20ff5c Dirk Brandewie  2011-10-06  289  	struct dw_i2c_dev *dev = pci_get_drvdata(pdev);
fe20ff5c Dirk Brandewie  2011-10-06  290  
18dbdda8 Dirk Brandewie  2011-10-06  291  	i2c_dw_disable(dev);
18dbdda8 Dirk Brandewie  2011-10-06  292  	pm_runtime_forbid(&pdev->dev);
18dbdda8 Dirk Brandewie  2011-10-06  293  	pm_runtime_get_noresume(&pdev->dev);

:::::: The code at line 285 was first introduced by commit
:::::: fe20ff5c7e9ca7f5369aacc7d7ca3efeda3b90fe i2c-designware: Add support for Designware core behind PCI devices.

:::::: TO: Dirk Brandewie <dirk.brandewie@...il.com>
:::::: CC: Ben Dooks <ben-linux@...ff.org>

---
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