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Kai Vehmanen e839fbed26 ALSA: hda/hdmi: fix max DP-MST dev_num for Intel TGL+ platforms
Increase the device select range to 4 on platforms supporting
4 concurrent displays.

This fixes a problem in scenario where total of 4 displays are active,
and 3 of these are audio capable DP receivers and connected to a DP-MST
hub. Due to incorrect range for device select, audio could not be played
to the 3rd monitor in DP-MST hub.

BugLink: https://github.com/thesofproject/linux/issues/2798
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20210324172337.51730-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
History 2021-03-25 08:21:01 +01:00
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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 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.