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ead3ea12e1
Our lane power down defines already include the necessary shift, don't shift them a second time. Fortunately we masked off the correct bits, so we accidentally left all lanes powered up all the time. Bits 8-11 where we end up writing our misdirected lane mask are documented as MBZ, but looks like you can actually write there so they're not read only bits. No idea what side effect the bogus register write might have. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/4151 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211006204937.30774-17-ville.syrjala@linux.intel.com Reviewed-by: Imre Deak <imre.deak@intel.com>
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.