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231a04fcc6
DP compo phy have to be enable to start link training. When link training failed phy need to be disabled so that next link traning can be proceed smoothly at next plug in. This patch de-initialize mainlink to disable phy if link training failed. This prevent system crash due to disp_cc_mdss_dp_link_intf_clk stuck at "off" state. This patch also perform checking power_on flag at dp_display_enable() and dp_display_disable() to avoid crashing when unplug cable while display is off. Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
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.