linux-kernel - Re: [v1] net:ethernet:cavium:octeon:octeon_mgmt: Handle return NULL error from devm

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Date:   Wed, 14 Dec 2016 22:40:45 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     kbuild-all@...org, peter.chen@....com, fw@...len.de,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [v1] net:ethernet:cavium:octeon:octeon_mgmt: Handle return NULL
 error from devm_ioremap

Hi Arvind,

[auto build test ERROR on net-next/master]
[also build test ERROR on v4.9 next-20161214]
[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/net-ethernet-cavium-octeon-octeon_mgmt-Handle-return-NULL-error-from-devm_ioremap/20161213-224624
config: mips-cavium_octeon_defconfig (attached as .config)
compiler: mips64-linux-gnuabi64-gcc (Debian 6.1.1-9) 6.1.1 20160705
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=mips 

All errors (new ones prefixed by >>):

   drivers/net/ethernet/cavium/octeon/octeon_mgmt.c: In function 'octeon_mgmt_probe':
>> drivers/net/ethernet/cavium/octeon/octeon_mgmt.c:1473:11: error: 'dev' undeclared (first use in this function)
      dev_err(dev, "failed to map I/O memory\n");
              ^~~
   drivers/net/ethernet/cavium/octeon/octeon_mgmt.c:1473:11: note: each undeclared identifier is reported only once for each function it appears in

vim +/dev +1473 drivers/net/ethernet/cavium/octeon/octeon_mgmt.c

  1467	
  1468		p->mix = (u64)devm_ioremap(&pdev->dev, p->mix_phys, p->mix_size);
  1469		p->agl = (u64)devm_ioremap(&pdev->dev, p->agl_phys, p->agl_size);
  1470		p->agl_prt_ctl = (u64)devm_ioremap(&pdev->dev, p->agl_prt_ctl_phys,
  1471						   p->agl_prt_ctl_size);
  1472		if (!p->mix || !p->agl || !p->agl_prt_ctl) {
> 1473			dev_err(dev, "failed to map I/O memory\n");
  1474			result = -ENOMEM;
  1475			goto err;
  1476		}

---
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