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982f589bde
We should be setting the drm_dp_aux_msg::reply field if a NACK or a SHORT reply happens. Update the error bit handling logic in ti_sn_aux_transfer() to handle these cases and notify upper layers that such errors have happened. This helps the retry logic understand that a timeout has happened, or to shorten the read length if the panel isn't able to handle the longest read possible. Note: I don't have any hardware that exhibits these code paths so this is written based on reading the datasheet for this bridge and inspecting the code and how this is called. Changes in v2: - Move WRITE_STATUS_UPDATE check from case to assignment Changes in v2: - Handle WRITE_STATUS_UPDATE properly Reviewed-by: Douglas Anderson <dianders@chromium.org> Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com> Cc: Jonas Karlman <jonas@kwiboo.se> Cc: Jernej Skrabec <jernej.skrabec@siol.net> Cc: Sean Paul <seanpaul@chromium.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20201102181144.3469197-5-swboyd@chromium.org |
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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.