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When using masked registers, there is nothing to clear since a masked register has the mask in the upper 16b: we can just write to the location we want and use the mask to control what bits we are writing to. However that doesn't mean we don't want to read back the register and check the value actually matched what we wanted to write, i.e. that the WA stick. That should be an explicit opt-out for registers that are either write-only or that are affected by hardware misbehavior. Moreover both wa_masked_en() and wa_masked_dis() check the WA stick, so skipping the check just because the field is more than 1 bit is surprising and error-prone. Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20201209045246.2905675-1-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.