Steps to reproduce (v6.1-rc2, x86_64):
1. make defconfig menuconfig
2. Enable the driver:
-> Device Drivers
-> Industrial I/O support (IIO [=y])
-> Light sensors
-> ROHM RPR0521 ALS and proximity sensor driver
3. make drivers/iio/light/rpr0521.o
Causes "implicit declaration of function" errors, e.g.,
CC drivers/iio/light/rpr0521.o
drivers/iio/light/rpr0521.c: In function 'rpr0521_drdy_irq_thread':
drivers/iio/light/rpr0521.c:434:3: error: implicit declaration of function
'iio_trigger_poll_chained' [-Werror=implicit-function-declaration]
434 | iio_trigger_poll_chained(data->drdy_trigger0);
| ^~~~~~~~~~~~~~~~~~~~~~~~
(This bug was found with the help of a tool, krepair, that generates
configuration files for commits: https://github.com/paulgazz/kmax)
The following patch ensures that the code controlled by IIO_BUFFER and
IIO_TRIGGERED_BUFFER is available:
Reported-by: Paul Gazzillo <paul@xxxxxxxxx>
---
drivers/iio/light/Kconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index 7cf6e8490123..0d4447df7200 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -293,6 +293,8 @@ config RPR0521
tristate "ROHM RPR0521 ALS and proximity sensor driver"
depends on I2C
select REGMAP_I2C
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
help
Say Y here if you want to build support for ROHM's RPR0521
ambient light and proximity sensor device.
--
2.25.1
