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Make sure that the two basic command interface functions cmd_exec and cmd_invoke will return well defined return values: return < 0 : Command execution couldn't be submitted by driver return > 0 : Command execution couldn't be performed by firmware return = 0 : Command was executed by FW, Caller must check FW outbox status. These statuses are valid for the blocking call of cmd_exec() e.g. when callback == NULL, in a downstream patch, will refactor the code to provide the same return value semantics to the callback. Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Reviewed-by: Moshe Shemesh <moshe@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.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.