linux-kernel - [PATCH 2.6.20-rc5 4/7] ehea: New method to determine number of available ports

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Message-Id: <200701221253.50709.osstklei@de.ibm.com>
Date:	Mon, 22 Jan 2007 12:53:50 +0100
From:	Thomas Klein <osstklei@...ibm.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Christoph Raisch <raisch@...ibm.com>,
	"Jan-Bernd Themann" <ossthema@...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>,
	netdev <netdev@...r.kernel.org>,
	Thomas Klein <tklein@...ibm.com>,
	Stefan Roscher <roscher@...ibm.com>,
	Stefan Roscher <ossrosch@...ibm.com>
Subject: [PATCH 2.6.20-rc5 4/7] ehea: New method to determine number of available ports

Count OFDT nodes to determine the number of available ports
instead of using the possibly outdated value from the hypervisor

Signed-off-by: Thomas Klein <tklein@...ibm.com>
---


 drivers/net/ehea/ehea_main.c |   15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletion(-)


diff -Nurp -X dontdiff linux-2.6.20-rc5/drivers/net/ehea/ehea_main.c patched_kernel/drivers/net/ehea/ehea_main.c
--- linux-2.6.20-rc5/drivers/net/ehea/ehea_main.c	2007-01-19 14:12:31.000000000 +0100
+++ patched_kernel/drivers/net/ehea/ehea_main.c	2007-01-19 14:15:53.000000000 +0100
@@ -2269,6 +2269,8 @@ static void ehea_tx_watchdog(struct net_
 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
 {
 	struct hcp_query_ehea *cb;
+	struct device_node *lhea_dn = NULL;
+	struct device_node *eth_dn = NULL;
 	u64 hret;
 	int ret;
 
@@ -2285,7 +2287,18 @@ int ehea_sense_adapter_attr(struct ehea_
 		goto out_herr;
 	}
 
-	adapter->num_ports = cb->num_ports;
+	/* Determine the number of available logical ports
+	 * by counting the child nodes of the lhea OFDT entry
+	 */
+	adapter->num_ports = 0;
+	lhea_dn = of_find_node_by_name(lhea_dn, "lhea");
+	do {
+		eth_dn = of_get_next_child(lhea_dn, eth_dn);
+		if (eth_dn)
+			adapter->num_ports++;
+	} while ( eth_dn );
+	of_node_put(lhea_dn);
+
 	adapter->max_mc_mac = cb->max_mc_mac - 1;
 	ret = 0;
 

-
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