Re: [PATCH v2] iio: Add SEMTECH SX9310/9311 sensor driver

From: kbuild test robot
Date: Sun Feb 09 2020 - 11:47:57 EST


Hi Daniel,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on iio/togreg]
[also build test WARNING on linux/master linus/master v5.5 next-20200207]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/Daniel-Campello/iio-Add-SEMTECH-SX9310-9311-sensor-driver/20200209-180706
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
reproduce:
# apt-get install sparse
# sparse version: v0.6.1-162-g98276e61-dirty
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>


sparse warnings: (new ones prefixed by >>)

>> drivers/iio/proximity/sx9310.c:184:9: sparse: sparse: Using plain integer as NULL pointer
drivers/iio/proximity/sx9310.c:185:9: sparse: sparse: Using plain integer as NULL pointer
drivers/iio/proximity/sx9310.c:186:9: sparse: sparse: Using plain integer as NULL pointer

vim +184 drivers/iio/proximity/sx9310.c

162
163 #define SX9310_CHANNEL(idx, name) \
164 { \
165 .type = IIO_PROXIMITY, \
166 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
167 .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
168 .indexed = 1, \
169 .channel = idx, \
170 .extend_name = name, \
171 .address = SX9310_REG_DIFF_MSB, \
172 .event_spec = sx9310_events, \
173 .num_event_specs = ARRAY_SIZE(sx9310_events), \
174 .scan_index = idx, \
175 .scan_type = { \
176 .sign = 's', \
177 .realbits = 12, \
178 .storagebits = 16, \
179 .endianness = IIO_BE, \
180 }, \
181 }
182
183 static const struct iio_chan_spec sx9310_channels[] = {
> 184 SX9310_CHANNEL(0, 0), /* CS0 */
185 SX9310_CHANNEL(1, 0), /* CS1 */
186 SX9310_CHANNEL(2, 0), /* CS2 */
187 SX9310_CHANNEL(3, "COMB"), /* COMB */
188
189 IIO_CHAN_SOFT_TIMESTAMP(4),
190 };
191

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