iio: adc: ad4030: fix invalid oversampling_ratio validation

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In ad4030_set_avg_frame_len(), the logarithm is calculated before input
validation. Passing zero or negative values leads to an undefined result
from ilog2().

Validate that the input is strictly positive prior to computing its
logarithm.

Fixes: 949abd1ca5 ("iio: adc: ad4030: add averaging support")
Assisted-by: LLM
Signed-off-by: Salah Triki <salah.triki@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

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Salah Triki 2026-09-03 12:43:09 +01:00 • committed by Jonathan Cameron

parent 9ec6ecc95d

commit d615210564

1 changed files with 9 additions and 2 deletions

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drivers/iio/adc/ad4030.c

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