linux-kernel - [patch 2/2] rocker: silence shift wrapping warning

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Message-ID: <20150225133612.GV19745@mwanda>
Date:	Wed, 25 Feb 2015 16:36:12 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Jiri Pirko <jiri@...nulli.us>
Cc:	Scott Feldman <sfeldma@...il.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch 2/2] rocker: silence shift wrapping warning

"val" is declared as a u64 so static checkers complain that this shift
can wrap.  I don't have the hardware but probably it's doesn't have over
31 ports.  Still we may as well silence the warning even if it's not a
real bug.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c
index 713a13c..9fb6948 100644
--- a/drivers/net/ethernet/rocker/rocker.c
+++ b/drivers/net/ethernet/rocker/rocker.c
@@ -1257,9 +1257,9 @@ static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
 	u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
 
 	if (enable)
-		val |= 1 << rocker_port->lport;
+		val |= 1ULL << rocker_port->lport;
 	else
-		val &= ~(1 << rocker_port->lport);
+		val &= ~(1ULL << rocker_port->lport);
 	rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
 }
 
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