From: Hal Rosenstock <hal@mellanox.com>
Date: Thu, 31 May 2012 22:35:41 +0000 (-0700)
Subject: ibacm: Avoid negative shift for subnet timeout
X-Git-Tag: v1.0.7~4
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=ac94bb084f01f868389017d3940d4b74190d9387;p=~shefty%2Fibacm.git

ibacm: Avoid negative shift for subnet timeout

Otherwise resulting port subnet timeout may be too large.

Signed-off-by: Hal Rosenstock <hal@mellanox.com>
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
---

diff --git a/src/acm.c b/src/acm.c
index 376f294..c940df3 100644
--- a/src/acm.c
+++ b/src/acm.c
@@ -2795,7 +2795,8 @@ static void acm_port_up(struct acm_port *port)
 
 	port->mtu = attr.active_mtu;
 	port->rate = acm_get_rate(attr.active_width, attr.active_speed);
-	port->subnet_timeout = 1 << (attr.subnet_timeout - 8);
+	if (attr.subnet_timeout >= 8)
+		port->subnet_timeout = 1 << (attr.subnet_timeout - 8);
 	for (port->gid_cnt = 0;; port->gid_cnt++) {
 		ret = ibv_query_gid(port->dev->verbs, port->port_num, port->gid_cnt, &gid);
 		if (ret || !gid.global.interface_id)