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iio: accel: adxl313: reject devices without match data

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SPI driver_override allows a device to bind to this driver without
matching either the OF or SPI device ID table. In that case,
spi_get_device_match_data() returns NULL.

adxl313_spi_probe() dereferences chip_data to select the regmap
configuration, causing a NULL pointer dereference.

Commit 572a008526 ("iio: dac: ad5686: missing NULL check on match
data") fixed the same driver_override issue in another SPI driver.
Reject devices without match data before selecting the configuration.

Fixes: d6e3ee74d1 ("iio: accel: adxl313: simplify with spi_get_device_match_data()")
Cc: stable@vger.kernel.org
Signed-off-by: Jiale Yao <yaojiale02@163.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
This commit is contained in:
Jiale Yao 2026-09-25 20:43:28 +08:00 committed by Jonathan Cameron
parent 6bdeaf23ef
commit defd4c0b29
1 changed files with 2 additions and 0 deletions
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2
drivers/iio/accel/adxl313_spi.c
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@ -79,6 +79,8 @@ static int adxl313_spi_probe(struct spi_device *spi)
return ret;
chip_data = spi_get_device_match_data(spi);
if (!chip_data)
return -ENODATA;
regmap = devm_regmap_init_spi(spi,
&adxl31x_spi_regmap_config[chip_data->type]);