rpms/kernel/F-11 linux-2.6-netdev-ehea-fix-circular-locking.patch, NONE, 1.1 kernel.spec, 1.1633, 1.1634
Chuck Ebbert
cebbert at fedoraproject.org
Mon Jun 8 22:42:00 UTC 2009
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Author: cebbert
Update of /cvs/pkgs/rpms/kernel/F-11
In directory cvs1.fedora.phx.redhat.com:/tmp/cvs-serv26987
Modified Files:
kernel.spec
Added Files:
linux-2.6-netdev-ehea-fix-circular-locking.patch
Log Message:
Add linux-2.6-netdev-ehea-fix-circular-locking.patch (#498854)
linux-2.6-netdev-ehea-fix-circular-locking.patch:
--- NEW FILE linux-2.6-netdev-ehea-fix-circular-locking.patch ---
From: Jan-Bernd Themann <themann at de.ibm.com>
Date: Fri, 13 Mar 2009 20:50:40 +0000 (-0700)
Subject: ehea: fix circular locking problem
X-Git-Tag: v2.6.30-rc1~662^2~241
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=52e21b1bd96444c452f6eab7dc438a8a898aa14a
[ cebbert at redhat.com: change driver version to 0096.1, fix context ]
ehea: fix circular locking problem
This patch fixes the circular locking problem by changing the locking strategy
concerning the logging of firmware handles.
Signed-off-by: Jan-Bernd Themann <themann at de.ibm.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
---
bz 498854
diff --git a/drivers/net/ehea/ehea.h b/drivers/net/ehea/ehea.h
index 029631c..6e317ca 100644
--- a/drivers/net/ehea/ehea.h
+++ b/drivers/net/ehea/ehea.h
@@ -40,7 +40,7 @@
#include <asm/io.h>
#define DRV_NAME "ehea"
-#define DRV_VERSION "EHEA_0096"
+#define DRV_VERSION "EHEA_0096.1"
/* eHEA capability flags */
#define DLPAR_PORT_ADD_REM 1
diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 40c34bf..ac0c5b4 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -155,6 +155,8 @@ static void ehea_update_firmware_handles(void)
int num_fw_handles, k, l;
/* Determine number of handles */
+ mutex_lock(&ehea_fw_handles.lock);
+
list_for_each_entry(adapter, &adapter_list, list) {
num_adapters++;
@@ -176,15 +178,19 @@ static void ehea_update_firmware_handles(void)
if (num_fw_handles) {
arr = kzalloc(num_fw_handles * sizeof(*arr), GFP_KERNEL);
if (!arr)
- return; /* Keep the existing array */
+ goto out; /* Keep the existing array */
} else
goto out_update;
list_for_each_entry(adapter, &adapter_list, list) {
+ if (num_adapters == 0)
+ break;
+
for (k = 0; k < EHEA_MAX_PORTS; k++) {
struct ehea_port *port = adapter->port[k];
- if (!port || (port->state != EHEA_PORT_UP))
+ if (!port || (port->state != EHEA_PORT_UP)
+ || (num_ports == 0))
continue;
for (l = 0;
@@ -207,6 +213,7 @@ static void ehea_update_firmware_handles(void)
}
arr[i].adh = adapter->handle;
arr[i++].fwh = port->qp_eq->fw_handle;
+ num_ports--;
}
arr[i].adh = adapter->handle;
@@ -216,16 +223,20 @@ static void ehea_update_firmware_handles(void)
arr[i].adh = adapter->handle;
arr[i++].fwh = adapter->mr.handle;
}
+ num_adapters--;
}
out_update:
kfree(ehea_fw_handles.arr);
ehea_fw_handles.arr = arr;
ehea_fw_handles.num_entries = i;
+out:
+ mutex_unlock(&ehea_fw_handles.lock);
}
static void ehea_update_bcmc_registrations(void)
{
+ unsigned long flags;
struct ehea_bcmc_reg_entry *arr = NULL;
struct ehea_adapter *adapter;
struct ehea_mc_list *mc_entry;
@@ -233,6 +244,8 @@ static void ehea_update_bcmc_registrations(void)
int i = 0;
int k;
+ spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
+
/* Determine number of registrations */
list_for_each_entry(adapter, &adapter_list, list)
for (k = 0; k < EHEA_MAX_PORTS; k++) {
@@ -250,7 +263,7 @@ static void ehea_update_bcmc_registrations(void)
if (num_registrations) {
arr = kzalloc(num_registrations * sizeof(*arr), GFP_ATOMIC);
if (!arr)
- return; /* Keep the existing array */
+ goto out; /* Keep the existing array */
} else
goto out_update;
@@ -261,6 +274,9 @@ static void ehea_update_bcmc_registrations(void)
if (!port || (port->state != EHEA_PORT_UP))
continue;
+ if (num_registrations == 0)
+ goto out_update;
+
arr[i].adh = adapter->handle;
arr[i].port_id = port->logical_port_id;
arr[i].reg_type = EHEA_BCMC_BROADCAST |
@@ -272,9 +288,13 @@ static void ehea_update_bcmc_registrations(void)
arr[i].reg_type = EHEA_BCMC_BROADCAST |
EHEA_BCMC_VLANID_ALL;
arr[i++].macaddr = port->mac_addr;
+ num_registrations -= 2;
list_for_each_entry(mc_entry,
&port->mc_list->list, list) {
+ if (num_registrations == 0)
+ goto out_update;
+
arr[i].adh = adapter->handle;
arr[i].port_id = port->logical_port_id;
arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
@@ -288,6 +308,7 @@ static void ehea_update_bcmc_registrations(void)
EHEA_BCMC_MULTICAST |
EHEA_BCMC_VLANID_ALL;
arr[i++].macaddr = mc_entry->macaddr;
+ num_registrations -= 2;
}
}
}
@@ -296,6 +317,8 @@ out_update:
kfree(ehea_bcmc_regs.arr);
ehea_bcmc_regs.arr = arr;
ehea_bcmc_regs.num_entries = i;
+out:
+ spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
}
static struct net_device_stats *ehea_get_stats(struct net_device *dev)
@@ -1762,8 +1785,6 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa)
memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
- spin_lock(&ehea_bcmc_regs.lock);
-
/* Deregister old MAC in pHYP */
if (port->state == EHEA_PORT_UP) {
ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
@@ -1784,7 +1805,6 @@ static int ehea_set_mac_addr(struct net_device *dev, void *sa)
out_upregs:
ehea_update_bcmc_registrations();
- spin_unlock(&ehea_bcmc_regs.lock);
out_free:
kfree(cb0);
out:
@@ -1946,8 +1966,6 @@ static void ehea_set_multicast_list(struct net_device *dev)
}
ehea_promiscuous(dev, 0);
- spin_lock(&ehea_bcmc_regs.lock);
-
if (dev->flags & IFF_ALLMULTI) {
ehea_allmulti(dev, 1);
goto out;
@@ -1977,7 +1995,6 @@ static void ehea_set_multicast_list(struct net_device *dev)
}
out:
ehea_update_bcmc_registrations();
- spin_unlock(&ehea_bcmc_regs.lock);
return;
}
@@ -2458,8 +2475,6 @@ static int ehea_up(struct net_device *dev)
if (port->state == EHEA_PORT_UP)
return 0;
- mutex_lock(&ehea_fw_handles.lock);
-
ret = ehea_port_res_setup(port, port->num_def_qps,
port->num_add_tx_qps);
if (ret) {
@@ -2496,8 +2511,6 @@ static int ehea_up(struct net_device *dev)
}
}
- spin_lock(&ehea_bcmc_regs.lock);
-
ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
if (ret) {
ret = -EIO;
@@ -2519,10 +2532,7 @@ out:
ehea_info("Failed starting %s. ret=%i", dev->name, ret);
ehea_update_bcmc_registrations();
- spin_unlock(&ehea_bcmc_regs.lock);
-
ehea_update_firmware_handles();
- mutex_unlock(&ehea_fw_handles.lock);
return ret;
}
@@ -2572,9 +2582,6 @@ static int ehea_down(struct net_device *dev)
if (port->state == EHEA_PORT_DOWN)
return 0;
- mutex_lock(&ehea_fw_handles.lock);
-
- spin_lock(&ehea_bcmc_regs.lock);
ehea_drop_multicast_list(dev);
ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
@@ -2583,7 +2590,6 @@ static int ehea_down(struct net_device *dev)
port->state = EHEA_PORT_DOWN;
ehea_update_bcmc_registrations();
- spin_unlock(&ehea_bcmc_regs.lock);
ret = ehea_clean_all_portres(port);
if (ret)
@@ -2591,7 +2597,6 @@ static int ehea_down(struct net_device *dev)
dev->name, ret);
ehea_update_firmware_handles();
- mutex_unlock(&ehea_fw_handles.lock);
return ret;
}
@@ -3368,7 +3373,6 @@ static int __devinit ehea_probe_adapter(struct of_device *dev,
ehea_error("Invalid ibmebus device probed");
return -EINVAL;
}
- mutex_lock(&ehea_fw_handles.lock);
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
if (!adapter) {
@@ -3453,7 +3457,7 @@ out_free_ad:
out:
ehea_update_firmware_handles();
- mutex_unlock(&ehea_fw_handles.lock);
+
return ret;
}
@@ -3472,8 +3476,6 @@ static int __devexit ehea_remove(struct of_device *dev)
flush_scheduled_work();
- mutex_lock(&ehea_fw_handles.lock);
-
ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
tasklet_kill(&adapter->neq_tasklet);
@@ -3483,7 +3485,6 @@ static int __devexit ehea_remove(struct of_device *dev)
kfree(adapter);
ehea_update_firmware_handles();
- mutex_unlock(&ehea_fw_handles.lock);
return 0;
}
@@ -3532,6 +3533,9 @@ static int ehea_mem_notifier(struct notifier_block *nb,
default:
break;
}
+
+ ehea_update_firmware_handles();
+
return NOTIFY_OK;
}
Index: kernel.spec
===================================================================
RCS file: /cvs/pkgs/rpms/kernel/F-11/kernel.spec,v
retrieving revision 1.1633
retrieving revision 1.1634
diff -u -p -r1.1633 -r1.1634
--- kernel.spec 8 Jun 2009 22:26:56 -0000 1.1633
+++ kernel.spec 8 Jun 2009 22:41:29 -0000 1.1634
@@ -717,6 +717,8 @@ Patch1839: drm-intel-set-domain-on-fault
# kludge to make ich9 e1000 work
Patch2000: linux-2.6-e1000-ich9.patch
+# BZ #498854
+Patch2010: linux-2.6-netdev-ehea-fix-circular-locking.patch
# linux1394 git patches
Patch2200: linux-2.6-firewire-git-update.patch
@@ -1368,6 +1370,8 @@ ApplyPatch linux-2.6.29-lirc.patch
ApplyPatch linux-2.6-cdrom-door-status.patch
ApplyPatch linux-2.6-e1000-ich9.patch
+# bz 498854
+ApplyPatch linux-2.6-netdev-ehea-fix-circular-locking.patch
ApplyPatch agp-set_memory_ucwb.patch
# Nouveau DRM + drm fixes
@@ -2023,6 +2027,9 @@ fi
# and build.
%changelog
+* Mon Jun 8 2009 Chuck Ebbert <cebbert at redhat.com> - 2.6.29.4-172
+- Add linux-2.6-netdev-ehea-fix-circular-locking.patch (#498854)
+
* Mon Jun 8 2009 Chuck Ebbert <cebbert at redhat.com> - 2.6.29.4-171
- Add AT keyboard forced key release quirks for four more notebooks.
(Fixes Samsung NC20/Q45, Fujitsu PA1510/Xi3650)
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