• Martin Blumenstingl's avatar
    iio: adc: meson-saradc: Use the parent device to look up the calib data · d53bfdf2
    Martin Blumenstingl authored
    On the older-gen 32-bit SoCs the meson-saradc driver is used to read the
    SoC temperature. This requires reading calibration data from the eFuse.
    
    Looking up the calibration data nvmem-cell requires the OF device_node
    pointer to be available in the struct device which is passed to
    devm_nvmem_cell_get(). This however got lost with commit 8cb631cc
    ("iio: Remove superfluous of_node assignments") from indio_dev->dev. As
    devm_nvmem_cell_get() is called in the initialization phase the
    device_node is not yet available because the NVMEM cell is looked up
    before iio_device_register() is called (which would then set the
    device_node automatically).
    Use the parent device to look up the NVMEM cell instead to fix this
    issue.
    
    Fixes: 8cb631cc ("iio: Remove superfluous of_node assignments")
    Signed-off-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
    Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
    d53bfdf2
meson_saradc.c 39.8 KB