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Host interface connection status is handled using a 32 bit type. Top byte is used as for FORCE_DISCONNECT status, low bits are used for connect/disconnect status. Driver masks and checks integers to ascertain status. If functions are defined to do the masking and equality check then the details of how the status integer is used are abstracted away. This makes the code easier to read. Also future updates to the status handling will be easier because the code is in one place. Driver currently uses the CONNECT_STATUS and DISCONNECT_STATUS as values, as apposed to opaque values. Because of this driver code checks for equality with CONNECT_STATUS and DISCONNECT_STATUS as apposed to negating a single check (ie 'foo != CONNECT_STATUS). In order to maintain the current functionality we define two separate functions is_connect_status() and is_disconnect_status(). Add functions to abstract the status integer check. Update all sites that do the check manually to use the newly defined functions. Signed-off-by: Tobin C. Harding <me@tobin.cc> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.