This patch adds a boolean module parameter that allows the user to turn
interrupt support on and off.  The default behavior is to attempt to use
interrupts.
Signed-off-by: NKylene Hall <kjhall@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>