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Message-Id: <200704261156.43524.osstklei@de.ibm.com>
Date: Thu, 26 Apr 2007 11:56:43 +0200
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 <ossrosch@...ux.vnet.ibm.com>
Subject: [PATCH 2/2] ehea: fix for dlpar support
Certain resources may only be allocated when first logical port is available,
and must be removed when last logical port has been removed.
Signed-off-by: Thomas Klein <tklein@...ibm.com>
---
This patch applies on top of the netdev upstream branch for 2.6.22
diff -Nurp -X dontdiff linux-2.6.21/drivers/net/ehea/ehea.h patched_kernel/drivers/net/ehea/ehea.h
--- linux-2.6.21/drivers/net/ehea/ehea.h 2007-04-26 11:21:33.000000000 +0200
+++ patched_kernel/drivers/net/ehea/ehea.h 2007-04-26 11:23:16.000000000 +0200
@@ -39,7 +39,7 @@
#include <asm/io.h>
#define DRV_NAME "ehea"
-#define DRV_VERSION "EHEA_0057"
+#define DRV_VERSION "EHEA_0058"
#define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
diff -Nurp -X dontdiff linux-2.6.21/drivers/net/ehea/ehea_main.c patched_kernel/drivers/net/ehea/ehea_main.c
--- linux-2.6.21/drivers/net/ehea/ehea_main.c 2007-04-26 11:21:33.000000000 +0200
+++ patched_kernel/drivers/net/ehea/ehea_main.c 2007-04-26 11:23:16.000000000 +0200
@@ -2130,6 +2130,28 @@ static int ehea_clean_all_portres(struct
return ret;
}
+static void ehea_remove_adapter_mr (struct ehea_adapter *adapter)
+{
+ int i;
+
+ for (i=0; i < EHEA_MAX_PORTS; i++)
+ if (adapter->port[i])
+ return;
+
+ ehea_rem_mr(&adapter->mr);
+}
+
+static int ehea_add_adapter_mr (struct ehea_adapter *adapter)
+{
+ int i;
+
+ for (i=0; i < EHEA_MAX_PORTS; i++)
+ if (adapter->port[i])
+ return 0;
+
+ return ehea_reg_kernel_mr(adapter, &adapter->mr);
+}
+
static int ehea_up(struct net_device *dev)
{
int ret, i;
@@ -2580,7 +2602,6 @@ static int ehea_setup_ports(struct ehea_
struct device_node *eth_dn = NULL;
u32 *dn_log_port_id;
- int port_setup_ok = 0;
int i = 0;
lhea_dn = adapter->ebus_dev->ofdev.node;
@@ -2594,6 +2615,12 @@ static int ehea_setup_ports(struct ehea_
continue;
}
+ if (ehea_add_adapter_mr(adapter)) {
+ ehea_error("creating MR failed");
+ of_node_put(eth_dn);
+ return -EIO;
+ }
+
adapter->port[i] = ehea_setup_single_port(adapter,
*dn_log_port_id,
eth_dn);
@@ -2601,18 +2628,13 @@ static int ehea_setup_ports(struct ehea_
ehea_info("%s -> logical port id #%d",
adapter->port[i]->netdev->name,
*dn_log_port_id);
+ else
+ ehea_remove_adapter_mr(adapter);
+
i++;
};
- /* Check for succesfully set up ports */
- for (i = 0; i < EHEA_MAX_PORTS; i++)
- if (adapter->port[i])
- port_setup_ok++;
-
- if (port_setup_ok)
- return 0; /* At least some ports are setup correctly */
-
- return -EINVAL;
+ return 0;
}
static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
@@ -2664,6 +2686,11 @@ static ssize_t ehea_probe_port(struct de
return -EINVAL;
}
+ if (ehea_add_adapter_mr(adapter)) {
+ ehea_error("creating MR failed");
+ return -EIO;
+ }
+
port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
of_node_put(eth_dn);
@@ -2677,8 +2704,10 @@ static ssize_t ehea_probe_port(struct de
ehea_info("added %s (logical port id=%d)", port->netdev->name,
logical_port_id);
- } else
+ } else {
+ ehea_remove_adapter_mr(adapter);
return -EIO;
+ }
return (ssize_t) count;
}
@@ -2713,6 +2742,8 @@ static ssize_t ehea_remove_port(struct d
return -EINVAL;
}
+ ehea_remove_adapter_mr(adapter);
+
return (ssize_t) count;
}
@@ -2773,18 +2804,13 @@ static int __devinit ehea_probe_adapter(
dev->ofdev.dev.driver_data = adapter;
- ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
- if (ret) {
- dev_err(&dev->ofdev.dev, "reg_mr_adapter failed\n");
- goto out_free_ad;
- }
/* initialize adapter and ports */
/* get adapter properties */
ret = ehea_sense_adapter_attr(adapter);
if (ret) {
dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
- goto out_free_res;
+ goto out_free_ad;
}
adapter->neq = ehea_create_eq(adapter,
@@ -2792,7 +2818,7 @@ static int __devinit ehea_probe_adapter(
if (!adapter->neq) {
ret = -EIO;
dev_err(&dev->ofdev.dev, "NEQ creation failed");
- goto out_free_res;
+ goto out_free_ad;
}
tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
@@ -2837,9 +2863,6 @@ out_free_irq:
out_kill_eq:
ehea_destroy_eq(adapter->neq);
-out_free_res:
- ehea_rem_mr(&adapter->mr);
-
out_free_ad:
kfree(adapter);
out:
@@ -2865,7 +2888,7 @@ static int __devexit ehea_remove(struct
tasklet_kill(&adapter->neq_tasklet);
ehea_destroy_eq(adapter->neq);
- ehea_rem_mr(&adapter->mr);
+ ehea_remove_adapter_mr(adapter);
kfree(adapter);
return 0;
}
-
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