From d2131b33c7e07c2905ee2f2321cc4dae1928c483 Mon Sep 17 00:00:00 2001
From: Brian King <brking@linux.vnet.ibm.com>
Date: Thu, 18 Dec 2008 09:26:51 -0600
Subject: [PATCH] [SCSI] ibmvfc: Improve async event handling
While doing various error injection testing, such as cable
pulls and target moves, some issues were observed in handling
these events. This patch improves the way these events are handled
by increasing the delay waiting for the fabric to settle and also
changes the behavior of Link Up to break the CRQ to ensure everything
gets cleaned up properly on the VIOS.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---
drivers/scsi/ibmvscsi/ibmvfc.c | 10 ++++++----
drivers/scsi/ibmvscsi/ibmvfc.h | 2 +-
2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a401e938a87aaf..44f202f33101f0 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -2156,15 +2156,17 @@ static void ibmvfc_handle_async(struct ibmvfc_async_crq *crq,
case IBMVFC_AE_LINK_UP:
case IBMVFC_AE_RESUME:
vhost->events_to_log |= IBMVFC_AE_LINKUP;
- ibmvfc_init_host(vhost, 1);
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
break;
case IBMVFC_AE_SCN_FABRIC:
+ case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
- ibmvfc_init_host(vhost, 1);
+ vhost->delay_init = 1;
+ __ibmvfc_reset_host(vhost);
break;
case IBMVFC_AE_SCN_NPORT:
case IBMVFC_AE_SCN_GROUP:
- case IBMVFC_AE_SCN_DOMAIN:
vhost->events_to_log |= IBMVFC_AE_RSCN;
case IBMVFC_AE_ELS_LOGO:
case IBMVFC_AE_ELS_PRLO:
@@ -3619,7 +3621,7 @@ static void ibmvfc_do_work(struct ibmvfc_host *vhost)
if (vhost->delay_init) {
vhost->delay_init = 0;
spin_unlock_irqrestore(vhost->host->host_lock, flags);
- ssleep(5);
+ ssleep(15);
return;
} else
vhost->job_step(vhost);
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index cf02216dc8dbbe..babdf3db59df9f 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -33,7 +33,7 @@
#define IBMVFC_DRIVER_DATE "(November 14, 2008)"
#define IBMVFC_DEFAULT_TIMEOUT 15
-#define IBMVFC_INIT_TIMEOUT 30
+#define IBMVFC_INIT_TIMEOUT 120
#define IBMVFC_MAX_REQUESTS_DEFAULT 100
#define IBMVFC_DEBUG 0
--
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