fe551bc9dc
Valid configurations for the extcon interrupt declarations are - usb_id - usb_vbus - (usb_id | usb_vbus) In the case of a standalone usb_id or usb_vbus failure to find one of the interrupts shouldn't generate a warning message. A warning is already in place if both IRQs are missing. Switch to using platform_get_irq_byname_optional() in order to facilitate this behaviour. Suggested-by: Marijn Suijten <marijn.suijten@somainline.org> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.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.