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Since JOYSTICK_SENSEHAT selects MFD_SIMPLE_MFD_I2C and the latter
depends on HAS_IOMEM, and since 'select' does not follow any
dependency chains, JOYSTICK_SENSEHAT should also depend on HAS_IOMEM
to prevent a kconfig warning and a build error:
WARNING: unmet direct dependencies detected for MFD_SIMPLE_MFD_I2C
Depends on [n]: HAS_IOMEM [=n] && I2C [=y]
Selected by [y]:
- JOYSTICK_SENSEHAT [=y] && INPUT_JOYSTICK [=y] && INPUT [=y] && I2C [=y]
s390-linux-ld: drivers/mfd/simple-mfd-i2c.o: in function `simple_mfd_i2c_probe':
simple-mfd-i2c.c:(.text+0xc8): undefined reference to `devm_mfd_add_devices'
Fixes: 41657514c7 ("Input: add Raspberry Pi Sense HAT joystick driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220531022942.16340-1-rdunlap@infradead.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.