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Correct the off-by-one mistake at the high register map range to prevent access of unsupported addresses. Fixes: e0bc6d7e2584 ("iio: adc: Initial support for AD4134") Signed-off-by: Marcelo Schmitt --- New patch in v3. drivers/iio/adc/ad4134.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ad4134.c b/drivers/iio/adc/ad4134.c index 70f80bf1825f..e53c10b9a44a 100644 --- a/drivers/iio/adc/ad4134.c +++ b/drivers/iio/adc/ad4134.c @@ -111,7 +111,7 @@ static const struct regmap_range ad4134_regmap_rd_range[] = { regmap_reg_range(AD4134_IFACE_CONFIG_A_REG, AD4134_SILICON_REV_REG), regmap_reg_range(AD4134_SCRATCH_PAD_REG, AD4134_PW_DOWN_CTRL_REG), regmap_reg_range(AD4134_DEVICE_STATUS_REG, AD4134_AIN_OR_ERROR_REG), - regmap_reg_range(AD4134_CH_VREG(0), AD4134_CH_VREG(AD4134_NUM_CHANNELS)), + regmap_reg_range(AD4134_CH_VREG(0), AD4134_CH_VREG(AD4134_NUM_CHANNELS - 1)), }; static const struct regmap_range ad4134_regmap_wr_range[] = { @@ -244,7 +244,7 @@ static const struct regmap_config ad4134_regmap_config = { .reg_write = ad4134_reg_write, .rd_table = &ad4134_regmap_rd_table, .wr_table = &ad4134_regmap_wr_table, - .max_register = AD4134_CH_VREG(ARRAY_SIZE(ad4134_chan_set)), + .max_register = AD4134_CH_VREG(ARRAY_SIZE(ad4134_chan_set) - 1), }; static int ad4134_read_raw(struct iio_dev *indio_dev, -- 2.53.0