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be2f92844d
leds-st1202 requires the LED Pattern Trigger (LEDS_TRIGGER_PATTERN), which is not selected when LED Trigger support is (LEDS_TRIGGERS). To reproduce this: - make menuconfig KCONFIG_CONFIG= - select LEDS_ST1202 dependencies OF, I2C and LEDS_CLASS. - select LEDS_ST1202 - LEDS_TRIGGERS is selected but LEDS_TRIGGER_PATTERN isn't. The absence of LEDS_TRIGGER_PATTERN explicitly required can lead to builds in which LEDS_ST1202 is selected while LEDS_TRIGGER_PATTERN isn't. The direct result of that would be that /sys/class/leds/<led>/hw_pattern wouldn't be available and there would be no way of interacting with the driver and hardware from user space. Add select LEDS_TRIGGER_PATTERN to Kconfig to meet the requirement and indirectly document it as well. Signed-off-by: Manuel Fombuena <fombuena@outlook.com> Link: https://lore.kernel.org/r/CWLP123MB5473F4DF3A668F7DD057A280C5C22@CWLP123MB5473.GBRP123.PROD.OUTLOOK.COM Signed-off-by: Lee Jones <lee@kernel.org> |
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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 reStructuredText 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.