linux-kernel - Re: [PATCH 5/5] max44000: Initial triggered buffer support

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Date:	Fri, 8 Apr 2016 05:56:08 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Crestez Dan Leonard <leonard.crestez@...el.com>
Cc:	kbuild-all@...org, Jonathan Cameron <jic23@...nel.org>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald-Stadler <pmeerw@...erw.net>,
	Daniel Baluta <daniel.baluta@...el.com>,
	Crestez Dan Leonard <leonard.crestez@...el.com>
Subject: Re: [PATCH 5/5] max44000: Initial triggered buffer support

Hi Crestez,

[auto build test WARNING on iio/togreg]
[also build test WARNING on v4.6-rc2 next-20160407]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Crestez-Dan-Leonard/Support-for-max44000-Ambient-and-Infrared-Proximity-Sensor/20160408-003121
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: s390-allyesconfig (attached as .config)
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=s390 

All warnings (new ones prefixed by >>):

   drivers/iio/light/max44000.c: In function 'max44000_trigger_handler':
>> drivers/iio/light/max44000.c:513:1: warning: 'max44000_trigger_handler' uses dynamic stack allocation
    }
    ^

vim +/max44000_trigger_handler +513 drivers/iio/light/max44000.c

   497		if (*indio_dev->active_scan_mask & (1 << MAX44000_SCAN_INDEX_PRX)) {
   498			ret = regmap_read(data->regmap, MAX44000_REG_PRX_DATA, &regval);
   499			if (ret < 0)
   500				goto out_unlock;
   501			*pos = regval;
   502		}
   503		mutex_unlock(&data->lock);
   504	
   505		iio_push_to_buffers_with_timestamp(indio_dev, buf, iio_get_time_ns());
   506		iio_trigger_notify_done(indio_dev->trig);
   507		return IRQ_HANDLED;
   508	
   509	out_unlock:
   510		mutex_unlock(&data->lock);
   511		iio_trigger_notify_done(indio_dev->trig);
   512		return IRQ_HANDLED;
 > 513	}
   514	
   515	static int max44000_probe(struct i2c_client *client,
   516				  const struct i2c_device_id *id)
   517	{
   518		struct max44000_data *data;
   519		struct iio_dev *indio_dev;
   520		int ret, reg;
   521	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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