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iio: adc: ti-ads1018: fix type overflow for data rate

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The variable 'drate' is currently defined as u8. However, the data rate
values in ads1018 can reach up to 3300 Hz, which exceeds the maximum
value of 255 that a u8 can hold.

Change the type of 'drate' to u32 to match the data_rate_mode_to_hz
array definition and ensure the data rate is handled correctly.

Fixes: bf0bba486b ("iio: adc: Add ti-ads1018 driver")
Signed-off-by: Chunyang Chen <chenchunyang0908@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Kurt Borja <kuurtb@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Chunyang Chen 2026-03-05 20:43:02 +08:00 committed by Jonathan Cameron
parent d20bbae6e5
commit 6f658d19a5
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/adc/ti-ads1018.c
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@ -249,7 +249,7 @@ static int ads1018_single_shot(struct ads1018 *ads1018,
struct iio_chan_spec const *chan, u16 *cnv)
{
u8 max_drate_mode = ads1018->chip_info->num_data_rate_mode_to_hz - 1;
u8 drate = ads1018->chip_info->data_rate_mode_to_hz[max_drate_mode];
u32 drate = ads1018->chip_info->data_rate_mode_to_hz[max_drate_mode];
u8 pga_mode = ads1018->chan_data[chan->scan_index].pga_mode;
struct spi_transfer xfer[2] = {
{