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In rtw_cmd_thread's main loop, we wait until there's a command in the queue. To skip this wait statement in subsequent iterations, the driver uses a label and goto instead of the actual loop. We only get back to the initial wait if the queue is empty when we read it. Basically, all we want to do is check if there's a command in the queue. If yes, we process it. If not, we wait until someone enqueues a command. Signed-off-by: Martin Kaiser <martin@kaiser.cx> Link: https://lore.kernel.org/r/20210408195601.4762-12-martin@kaiser.cx Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 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.