[PATCH 7 of 10] ipath - enable PE800 receive interrupts on user ports

["Bryan O'Sullivan" <bos@pathscale.com>]

Fixed so it works on the PE-800.  It had not previously been updated to
match PE-800 receive interrupt differences from HT-400.

Signed-off-by: Bryan O'Sullivan <bos@pathscale.com>

diff -r 5d7e365286b3 -r 8d87788e21b1 drivers/infiniband/hw/ipath/ipath_file_ops.c
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c	Tue May 23 11:29:16 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c	Tue May 23 11:29:16 2006 -0700
@@ -1224,6 +1224,10 @@ static unsigned int ipath_poll(struct fi
 
 	if (tail == head) {
 		set_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag);
+		if(dd->ipath_rhdrhead_intr_off) /* arm rcv interrupt */
+			(void)ipath_write_ureg(dd, ur_rcvhdrhead,
+					       dd->ipath_rhdrhead_intr_off
+					       | head, pd->port_port);
 		poll_wait(fp, &pd->port_wait, pt);
 
 		if (test_bit(IPATH_PORT_WAITING_RCV, &pd->port_flag)) {
-
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