i.MX6SX only has 4 ADC channels, so limit channel numbers to 4 for compatible string 'fsl,imx6sx-adc'. Reviewed-by: Haibo Chen <haibo.chen@xxxxxxx> Signed-off-by: Frank Li <Frank.Li@xxxxxxx> --- compatible string 'fsl,imx6sx-adc' already document in Documentation/devicetree/bindings/iio/adc/fsl,vf610-adc.yaml Change from v1 to v2 - Add Haibo Chen <haibo.chen@xxxxxxx> - change cast to uintptr_t to fix below warning | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202411052345.gyJaM3h4-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/iio/adc/vf610_adc.c:20: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:21: In file included from include/linux/mm.h:2213: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~>> drivers/iio/adc/vf610_adc.c:874:28: warning: cast to smaller integer type 'u32' (aka 'unsigned int') from 'const void *' [-Wvoid-pointer-to-int-cast] 874 | indio_dev->num_channels = (u32)device_get_match_data(dev); | --- drivers/iio/adc/vf610_adc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index 4e737b193c012..b2e83da637ff0 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -809,7 +809,8 @@ static const struct iio_info vf610_adc_iio_info = { }; static const struct of_device_id vf610_adc_match[] = { - { .compatible = "fsl,vf610-adc", }, + { .compatible = "fsl,imx6sx-adc", .data = (void *)4}, + { .compatible = "fsl,vf610-adc", .data = (void *)ARRAY_SIZE(vf610_adc_iio_channels)}, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, vf610_adc_match); @@ -870,7 +871,7 @@ static int vf610_adc_probe(struct platform_device *pdev) indio_dev->info = &vf610_adc_iio_info; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = vf610_adc_iio_channels; - indio_dev->num_channels = ARRAY_SIZE(vf610_adc_iio_channels); + indio_dev->num_channels = (uintptr_t)device_get_match_data(dev); vf610_adc_cfg_init(info); vf610_adc_hw_init(info); -- 2.34.1
