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authorDaniel Hansel <daniel.hansel@linux.vnet.ibm.com>2013-04-26 17:32:14 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-28 16:18:27 -0700
commitddaf85745502f71e6a873c5cb6c975a3b0993bbc (patch)
tree5e7660fabd68c66c106695d58b75b640c5e16042
parent1d912e701574a3327199d20d280f010b479a41af (diff)
SCSI: zfcp: fix adapter (re)open recovery while link to SAN is down
commit f76ccaac4f82c463a037aa4a1e4ccb85c7011814 upstream. FCP device remains in status ERP_FAILED when device is switched online or adapter recovery is triggered while link to SAN is down. When Exchange Configuration Data command returns the FSF status FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE it aborts the exchange process. The only retries are done during the common error recovery procedure (i.e. max. 3 retries with 8sec sleep between) and remains in status ERP_FAILED with QDIO down. This commit reverts the commit 0df138476c8306478d6e726f044868b4bccf411c (zfcp: Fix adapter activation on link down). When FSF status FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE is received the adapter recovery will be finished without any retries. QDIO will be up now and status changes such as LINK UP will be received now. Signed-off-by: Daniel Hansel <daniel.hansel@linux.vnet.ibm.com> Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 6e73bfe92daa..8976d0238097 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -534,6 +534,10 @@ static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
adapter->hydra_version = 0;
+ /* avoids adapter shutdown to be able to recognize
+ * events such as LINK UP */
+ atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
+ &adapter->status);
zfcp_fsf_link_down_info_eval(req,
&qtcb->header.fsf_status_qual.link_down_info);
break;