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Lyude Paul 87212b51bf drm/dp_mst: Reprobe path resources in CSN handler 
We used to punt off reprobing path resources to the link address probe
work, but now that we handle CSNs asynchronously from the driver's HPD
handling we can do whatever the heck we want from the CSN!

So, reprobe the path resources from drm_dp_mst_handle_conn_stat(). Also,
get rid of the path resource reprobing code in
drm_dp_check_and_send_link_address() since it's needlessly complicated
when we already reprobe path resources from
drm_dp_handle_link_address_port(). And finally, teach
drm_dp_send_enum_path_resources() to return 1 on PBN changes so we know
if we need to send another hotplug or not.

This fixes issues where we've indicated to userspace that a port has
just been connected, before we actually probed it's available PBN -
something that results in unexpected atomic check failures.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Fixes: cd82d82cbc ("drm/dp_mst: Add branch bandwidth validation to MST atomic check")
Cc: Mikita Lipski <mikita.lipski@amd.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20200306234623.547525-4-lyude@redhat.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
2020-03-12 19:07:24 -04:00
arch ARM: SoC fixes 2020-03-08 17:36:22 -07:00
block
certs
crypto
Documentation ARM: SoC fixes 2020-03-08 17:36:22 -07:00
drivers drm/dp_mst: Reprobe path resources in CSN handler 2020-03-12 19:07:24 -04:00
fs Driver core / debugfs fixes for 5.6-rc5 2020-03-08 10:39:40 -05:00
include drm/dp_mst: Use full_pbn instead of available_pbn for bandwidth checks 2020-03-12 19:07:24 -04:00
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kernel block-5.6-2020-03-07 2020-03-07 14:14:38 -06:00
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tools for-linus-2020-03-07 2020-03-07 08:01:43 -06:00
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MAINTAINERS ARM: SoC fixes 2020-03-08 17:36:22 -07:00
Makefile Linux 5.6-rc5 2020-03-08 17:44:44 -07:00
README

README 

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.