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`daqboard2000_poll_cpld()` waits for a specified status bit in the CPLD status register to be set, giving up after 50 tries over a period of about 5 milliseconds. It returns 1 if the status bit is set, otherwise 0. It is only ever called to check the "INIT" status bit. Replace it with new function `daqboard2000_wait_cpld_init()`, which returns 0 if the "INIT" status bit becomes set within 50 tries, or `-ETIMEDOUT` if not set within 50 tries. The firmware loading callback `daqboard2000_load_firmware()` may return the error result from `daqboard2000_wait_cpld_init()` if it has used up all its firmware loading attempts and that was the last error. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> 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.