From: Christof Schmitt <christof.schmitt@xxxxxxxxxx>
When the last port entry in the gpn_ft response is already a known
port, the eval function would skip the end flag and try to attach
ports with wwpn 0. Fix this by checking the flag first.
Signed-off-by: Christof Schmitt <christof.schmitt@xxxxxxxxxx>
Signed-off-by: Martin Petermann <martin@xxxxxxxxxxxxxxxxxx>
---
drivers/s390/scsi/zfcp_fc.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff -urpN linux-2.6/drivers/s390/scsi/zfcp_fc.c linux-2.6-patched/drivers/s390/scsi/zfcp_fc.c
--- linux-2.6/drivers/s390/scsi/zfcp_fc.c 2008-08-20 14:41:08.000000000 +0200
+++ linux-2.6-patched/drivers/s390/scsi/zfcp_fc.c 2008-08-20 14:41:34.000000000 +0200
@@ -475,7 +475,7 @@ static int zfcp_scan_eval_gpn_ft(struct
struct zfcp_adapter *adapter = ct->port->adapter;
struct zfcp_port *port, *tmp;
u32 d_id;
- int ret = 0, x;
+ int ret = 0, x, last = 0;
if (ct->status)
return -EIO;
@@ -492,12 +492,13 @@ static int zfcp_scan_eval_gpn_ft(struct
down(&zfcp_data.config_sema);
/* first entry is the header */
- for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES; x++) {
+ for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES && !last; x++) {
if (x % (ZFCP_GPN_FT_ENTRIES + 1))
acc++;
else
acc = sg_virt(++sg);
+ last = acc->control & 0x80;
d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 |
acc->port_id[2];
@@ -513,8 +514,6 @@ static int zfcp_scan_eval_gpn_ft(struct
ret = PTR_ERR(port);
else
zfcp_erp_port_reopen(port, 0, 149, NULL);
- if (acc->control & 0x80) /* last entry */
- break;
}
zfcp_erp_wait(adapter);
--
--
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