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601aff2337
Detecting the hpd irq in the gpio irq handler, the hpd type will overwrite by the next gpio irq. So the hpd work can't recognize the hpd irq. Use a state machine to deal with the hpd status to avoid this issue happen. Change-Id: I1214b1a281cbb8e82431bcc1c2b4a0856d64a7a0 Signed-off-by: Zhang Yubing <yubing.zhang@rock-chips.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.