From c9fb952360d0c78bbe98239bd6b702f05c2dbb31 Mon Sep 17 00:00:00 2001 From: Pei Xiao Date: Tue, 14 Oct 2025 17:12:50 +0800 Subject: [PATCH] iio: adc: ti_am335x_adc: Limit step_avg to valid range for gcc complains FIELD_PREP() checks that a value fits into the available bitfield, add a check for step_avg to fix gcc complains. which gcc complains about: drivers/iio/adc/ti_am335x_adc.c: In function 'tiadc_step_config': include/linux/compiler_types.h:572:38: error: call to '__compiletime_assert_491' declared with attribute error: FIELD_PREP: value too large for the field include/linux/mfd/ti_am335x_tscadc.h:58:29: note: in expansion of macro 'FIELD_PREP' #define STEPCONFIG_AVG(val) FIELD_PREP(GENMASK(4, 2), (val)) ^~~~~~~~~~ drivers/iio/adc/ti_am335x_adc.c:127:17: note: in expansion of macro 'STEPCONFIG_AVG' stepconfig = STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1) Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202510102117.Jqxrw1vF-lkp@intel.com/ Signed-off-by: Pei Xiao Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ti_am335x_adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 99f274adc870d..a1a28584de930 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -123,7 +123,7 @@ static void tiadc_step_config(struct iio_dev *indio_dev) chan = adc_dev->channel_line[i]; - if (adc_dev->step_avg[i]) + if (adc_dev->step_avg[i] && adc_dev->step_avg[i] <= STEPCONFIG_AVG_16) stepconfig = STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1) | STEPCONFIG_FIFO1; else -- 2.47.3