Ville Syrjälä 1f6b8eef11 drm/edid: Reset more of the display info
We're currently failing to reset everything in display_info.hdmi
which will potentially cause us to use stale information when
swapping monitors. Eg. if the user replaces a HDMI 2.0 monitor
with a HDMI 1.x monitor we will continue to think that the monitor
supports scrambling. That will lead to a black screen since the
HDMI 1.x monitor won't understand the scrambled signal.

Fix the problem by clearing display_info.hdmi fully. And while at
eliminate some duplicated code by calling drm_reset_display_info()
in drm_add_display_info().

Cc: stable@vger.kernel.org
Cc: Antony Chen <antonychen@qnap.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105655
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180424130250.7028-1-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Antony Chen <antonychen@qnap.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
2018-04-25 15:03:13 -04:00
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2018-01-06 10:59:44 -07:00
2018-04-15 17:21:30 -07:00
2018-04-13 15:38:53 -07:00
2018-04-21 10:32:16 -07:00
2018-03-28 16:09:09 +02:00
2018-04-15 17:21:30 -07:00
2017-11-17 17:45:29 -08:00
2018-04-22 19:20:09 -07:00

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.
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