Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.arch / s390-05-03-zfcp-wka-port.patch

diff --git a/src/patches/suse-2.6.27.31/patches.arch/s390-05-03-zfcp-wka-port.patch b/src/patches/suse-2.6.27.31/patches.arch/s390-05-03-zfcp-wka-port.patch
new file mode 100644 (file)
index 0000000..67f3161
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.arch/s390-05-03-zfcp-wka-port.patch
@@ -0,0 +1,43 @@
+From: Gerald Schaefer <geraldsc@de.ibm.com>
+Subject: zfcp: Fix opening of wka ports
+References: bnc#450096
+
+Symptom:     Opening the wka port twice in parallel leads to error
+             recovery.
+Problem:     Two port_open requests are sent and the second one
+             invalidates the existing port handle. Using the wrong
+             port handle later is unexpected and starts error
+             recovery.
+Solution:    Change the status check to only issue one port_open
+             request and do not accidentally overwrite the existing
+             port handle.
+
+Acked-by: John Jolly <jjolly@suse.de>
+---
+
+ drivers/s390/scsi/zfcp_fc.c  |    3 ++-
+ drivers/s390/scsi/zfcp_fsf.c |    1 +
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+--- a/drivers/s390/scsi/zfcp_fc.c      2008-11-26 15:05:49.000000000 +0100
++++ b/drivers/s390/scsi/zfcp_fc.c      2008-11-26 15:13:11.000000000 +0100
+@@ -52,7 +52,8 @@ static int zfcp_wka_port_get(struct zfcp
+       if (mutex_lock_interruptible(&wka_port->mutex))
+               return -ERESTARTSYS;
+ 
+-      if (wka_port->status != ZFCP_WKA_PORT_ONLINE) {
++      if (wka_port->status == ZFCP_WKA_PORT_OFFLINE ||
++          wka_port->status == ZFCP_WKA_PORT_CLOSING) {
+               wka_port->status = ZFCP_WKA_PORT_OPENING;
+               if (zfcp_fsf_open_wka_port(wka_port))
+                       wka_port->status = ZFCP_WKA_PORT_OFFLINE;
+--- a/drivers/s390/scsi/zfcp_fsf.c     2008-11-26 15:05:51.000000000 +0100
++++ b/drivers/s390/scsi/zfcp_fsf.c     2008-11-26 15:13:11.000000000 +0100
+@@ -1588,6 +1588,7 @@ static void zfcp_fsf_open_wka_port_handl
+               wka_port->status = ZFCP_WKA_PORT_OFFLINE;
+               break;
+       case FSF_PORT_ALREADY_OPEN:
++              break;
+       case FSF_GOOD:
+               wka_port->handle = header->port_handle;
+               wka_port->status = ZFCP_WKA_PORT_ONLINE;