linux-kernel - [PATCH][2.6.26] ehea: set mac address fix

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Message-Id: <200806091617.38396.ossthema@de.ibm.com>
Date:	Mon, 9 Jun 2008 15:17:37 +0100
From:	Jan-Bernd Themann <ossthema@...ibm.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	netdev <netdev@...r.kernel.org>,
	Christoph Raisch <raisch@...ibm.com>,
	"Jan-Bernd Themann" <themann@...ibm.com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	"linux-ppc" <linuxppc-dev@...abs.org>,
	Marcus Eder <meder@...ibm.com>,
	Thomas Klein <tklein@...ibm.com>, hering2@...ibm.com
Subject: [PATCH][2.6.26] ehea: set mac address fix

eHEA has to call firmware functions in order to change the mac address
of a logical port. This patch checks if the logical port is up
when calling the register / deregister mac address calls. If the port
is down these firmware calls would fail and are therefore not executed.

Signed-off-by: Jan-Bernd Themann <themann@...ibm.com>

---

diff -Nurp -X dontdiff linux-2.6.26-rc4/drivers/net/ehea/ehea_main.c patched_kernel/drivers/net/ehea/ehea_main.c
--- linux-2.6.26-rc4/drivers/net/ehea/ehea_main.c	2008-05-26 20:08:11.000000000 +0200
+++ patched_kernel/drivers/net/ehea/ehea_main.c	2008-06-09 15:42:17.000000000 +0200
@@ -1766,16 +1766,20 @@ static int ehea_set_mac_addr(struct net_
 	mutex_lock(&ehea_bcmc_regs.lock);
 
 	/* Deregister old MAC in pHYP */
-	ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
-	if (ret)
-		goto out_upregs;
+	if (port->state == EHEA_PORT_UP) {
+		ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
+		if (ret)
+			goto out_upregs;
+	}
 
 	port->mac_addr = cb0->port_mac_addr << 16;
 
 	/* Register new MAC in pHYP */
-	ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
-	if (ret)
-		goto out_upregs;
+	if (port->state == EHEA_PORT_UP) {
+		ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
+		if (ret)
+			goto out_upregs;
+	}
 
 	ret = 0;
 
--
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