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There are two macros to issue a cmdq write: MM_REG_WRITE_MASK and MM_REG_WRITE, but confusingly, both of them take a mask parameter. The difference is that MM_REG_WRITE additionally checks whether the mask passed in contains the register mask, in which case, the 0xffffffff mask is passed to cmdq_pkt_write_mask(), effectively disregarding the mask and calling cmdq_pkt_write() as an optimization. Move that optimization to the MM_REG_WRITE_MASK macro and make MM_REG_WRITE the variant that doesn't take a mask, directly calling to cmdq_pkt_write(). Change the call sites to MM_REG_WRITE whenever a mask wasn't necessary (ie 0xffffffff or a <register>_MASK was passed as mask) and in other cases to MM_REG_WRITE_MASK. Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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 reStructuredText 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.