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98cf5c9a48
The unaligned ioread32() will make us read byte by byte looking for the vbt. We could just as well have done a ioread8() + a shift and avoid the extra confusion on how we are looking for "$VBT". However when using ACPI it's guaranteed the VBT is 4-byte aligned per spec, so we can probably assume it here as well. v2: do not try to simplify the loop by eliminating the auxiliary counter (Jani and Ville) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191126225110.8127-4-lucas.demarchi@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.