linux-kernel - Re: [PATCH V5 2/2] thermal: max77620: Add thermal driver for reporting junction temp

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Date:   Tue, 23 Aug 2016 16:29:16 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Laxman Dewangan <ldewangan@...dia.com>
Cc:     kbuild-all@...org, rui.zhang@...el.com, edubezval@...il.com,
        robh+dt@...nel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Laxman Dewangan <ldewangan@...dia.com>
Subject: Re: [PATCH V5 2/2] thermal: max77620: Add thermal driver for
 reporting junction temp

Hi Laxman,

[auto build test WARNING on thermal/next]
[also build test WARNING on next-20160823]
[cannot apply to v4.8-rc3]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Laxman-Dewangan/thermal-max77620-Add-DT-binding-doc-for-thermal-driver/20160823-151342
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git next
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/thermal/max77620_thermal.c: In function 'max77620_thermal_probe':
>> drivers/thermal/max77620_thermal.c:95:5: warning: 'mtherm' is used uninitialized in this function [-Wuninitialized]
     if (!mtherm)
        ^

vim +/mtherm +95 drivers/thermal/max77620_thermal.c

    79	
    80		if (irq == mtherm->irq_tjalarm1)
    81			dev_warn(mtherm->dev, "Junction Temp Alarm1(120C) occurred\n");
    82		else if (irq == mtherm->irq_tjalarm2)
    83			dev_crit(mtherm->dev, "Junction Temp Alarm2(140C) occurred\n");
    84	
    85		thermal_zone_device_update(mtherm->tz_device);
    86	
    87		return IRQ_HANDLED;
    88	}
    89	
    90	static int max77620_thermal_probe(struct platform_device *pdev)
    91	{
    92		struct max77620_therm_info *mtherm;
    93		int ret;
    94	
  > 95		if (!mtherm)
    96			return -ENOMEM;
    97	
    98		mtherm->irq_tjalarm1 = platform_get_irq(pdev, 0);
    99		mtherm->irq_tjalarm2 = platform_get_irq(pdev, 1);
   100		if ((mtherm->irq_tjalarm1 < 0) || (mtherm->irq_tjalarm2 < 0)) {
   101			dev_err(&pdev->dev, "Alarm irq number not available\n");
   102			return -EINVAL;
   103		}

---
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Download attachment ".config.gz" of type "application/octet-stream" (55577 bytes)