Add local variable for the io_addr, mask. and bits used in this
function so that the comments are not needed and the writel/readl
calls are a bit cleaner.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>