>> + bool "Semtech SX150x I2C GPIO expander" >> + depends on I2C=y >> + default n >> + help >> + Say yes here to provide support for Semtech SX150-series I2C >> + GPIO expanders. Compatible models include: > > Just curious, not complaining, but why does this driver (and some others) > need to be built-in instead of having the option of being built as a > loadable module?
It's that way because it requires unexported symbols from genirq and I2C. If this driver is allowed to be a module, it can't find the unexported genirq symbols, and if I2C is allowed to be a module, then a bunch of i2c_smbus stuff can't be resolved...
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