From: Bryan O'Sullivan <bos@pathscale.com>
Date: Tue, 23 May 2006 18:32:35 +0000 (-0700)
Subject: IB/ipath: enable PE800 receive interrupts on user ports
X-Git-Tag: firefly_0821_release~35659^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9dcc0e58e2913f7e6ffba64c27fe5c2f2c7b845c;p=firefly-linux-kernel-4.4.55.git

IB/ipath: enable PE800 receive interrupts on user ports

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>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index bd14eb1e6529..ada267e41f6c 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1224,6 +1224,10 @@ static unsigned int ipath_poll(struct file *fp,
 
 	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)) {