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authorChristof Schmitt <christof.schmitt@de.ibm.com>2008-08-21 13:43:33 +0200
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-08-29 09:03:56 -0500
commit47f7bba52b01dd881fbd17b4b50c89ecf186eee2 (patch)
tree9587e2d4d69c54861659bfd2132ccecf81aadc52 /drivers/s390/scsi
parentd4538817287e56abc938900886301a5bdfafbfcd (diff)
downloadop-kernel-dev-47f7bba52b01dd881fbd17b4b50c89ecf186eee2.zip
op-kernel-dev-47f7bba52b01dd881fbd17b4b50c89ecf186eee2.tar.gz
[SCSI] zfcp: Correctly query end flag in gpn_ft response
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@de.ibm.com> Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390/scsi')
-rw-r--r--drivers/s390/scsi/zfcp_fc.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index e984469..27edabe 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -475,7 +475,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft)
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 zfcp_gpn_ft *gpn_ft)
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 zfcp_gpn_ft *gpn_ft)
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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