6.16-stable review patch. If anyone has any objections, please let me know.
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From: Matti Vaittinen mazziesaccount@gmail.com
commit 8a6ededaad2d2dcaac8e545bffee1073dca9db95 upstream.
The bd79124 has ADC inputs which can be muxed to be GPIOs. The driver supports this by registering a GPIO-chip for channels which aren't used as ADC.
The Kconfig entry does not handle the dependency to GPIOLIB, which causes errors:
ERROR: modpost: "devm_gpiochip_add_data_with_key" [drivers/iio/adc/rohm-bd79124.ko] undefined! ERROR: modpost: "gpiochip_get_data" [drivers/iio/adc/rohm-bd79124.ko] undefined!
at linking phase if GPIOLIB is not configured to be used.
Fix this by adding dependency to the GPIOLIB.
Reported-by: kernel test robot lkp@intel.com Closes: https://lore.kernel.org/oe-kbuild-all/202508131533.5sSkq80B-lkp@intel.com/ Fixes: 3f57a3b9ab74 ("iio: adc: Support ROHM BD79124 ADC") Signed-off-by: Matti Vaittinen mazziesaccount@gmail.com Reviewed-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Link: https://patch.msgid.link/6837249bddf358924e67566293944506206d2d62.1755076369... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1257,7 +1257,7 @@ config RN5T618_ADC
config ROHM_BD79124 tristate "Rohm BD79124 ADC driver" - depends on I2C + depends on I2C && GPIOLIB select REGMAP_I2C select IIO_ADC_HELPER help