Thomas, Sorry, you are right. I mistook PM_OFFSET for PIR_OFFSET. Thanks, Andrew On Fri, 04 Dec 2009 17:03 +0100, "Thomas Bogendoerfer" <tsbogend@xxxxxxxxxxxxxxxx> wrote: > On Thu, Dec 03, 2009 at 07:52:30PM -0600, myuboot@xxxxxxxxxxx wrote: > > Hi, What is the use of PIR register for AR7 board in file > > arch/mips/ar7/irq.c? > > it gives back the channel and line of the pending interrupt with the > highest priority. > > > If I understand it right, PIR is used to define the > > polarity of the interrupts. It seems to me that it needs to initialized? > > no, it's a read only register. Why do you think it has something to do > with interrupt polarity ? > > Thomas. > > -- > Crap can work. Given enough thrust pigs will fly, but it's not necessary > a > good idea. [ RFC1925, 2.3 > ]