Re: [PATCH] iio: light: al3010: read both ALS ADC registers again
From: kernel test robot
Date: Wed May 20 2026 - 23:38:17 EST
Hi Alexander,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v7.1-rc4 next-20260520]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Alexander-A-Klimov/iio-light-al3010-read-both-ALS-ADC-registers-again/20260521-024036
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20260520175855.538098-1-grandmaster%40al2klimov.de
patch subject: [PATCH] iio: light: al3010: read both ALS ADC registers again
config: sh-randconfig-r111-20260521 (https://download.01.org/0day-ci/archive/20260521/202605211105.cR7k7vyR-lkp@xxxxxxxxx/config)
compiler: sh4-linux-gcc (GCC) 13.4.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260521/202605211105.cR7k7vyR-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605211105.cR7k7vyR-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
>> drivers/iio/light/al3010.c:129:24: sparse: sparse: cast to restricted __le16
vim +129 drivers/iio/light/al3010.c
108
109 static int al3010_read_raw(struct iio_dev *indio_dev,
110 struct iio_chan_spec const *chan, int *val,
111 int *val2, long mask)
112 {
113 struct al3010_data *data = iio_priv(indio_dev);
114 int ret, gain;
115 uint16_t raw;
116
117 switch (mask) {
118 case IIO_CHAN_INFO_RAW:
119 /*
120 * ALS ADC value is stored in two adjacent registers:
121 * - low byte of output is stored at AL3010_REG_DATA_LOW
122 * - high byte of output is stored at AL3010_REG_DATA_LOW + 1
123 */
124 ret = regmap_bulk_read(data->regmap, AL3010_REG_DATA_LOW,
125 &raw, sizeof(raw));
126 if (ret)
127 return ret;
128
> 129 *val = le16_to_cpu(raw);
130
131 return IIO_VAL_INT;
132 case IIO_CHAN_INFO_SCALE:
133 ret = regmap_read(data->regmap, AL3010_REG_CONFIG, &gain);
134 if (ret)
135 return ret;
136
137 gain = FIELD_GET(AL3010_GAIN_MASK, gain);
138 *val = al3010_scales[gain][0];
139 *val2 = al3010_scales[gain][1];
140
141 return IIO_VAL_INT_PLUS_MICRO;
142 }
143 return -EINVAL;
144 }
145
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