[PATCH 7/7] drivers/s390/scsi/zfcp_cfdc.c: remove invalid reference to list iterator variable

[Julia Lawall]

From: Julia Lawall <Julia.Lawall@xxxxxxx>

If list_for_each_entry, etc complete a traversal of the list, the iterator
variable ends up pointing to an address at an offset from the list head,
and not a meaningful structure.  Thus this value should not be used after
the end of the iterator.  Replace port->adapter->scsi_host by
adapter->scsi_host.

This problem was found using Coccinelle (http://coccinelle.lip6.fr/).

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>

---
This is not tested, an I am not sure that this is the right change.
Indeed, I'm not at all sure how the original code could have worked, since
port->adapter->scsi_host should be a completely random value.

 drivers/s390/scsi/zfcp_cfdc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
index fab2c25..8ed63aa 100644
--- a/drivers/s390/scsi/zfcp_cfdc.c
+++ b/drivers/s390/scsi/zfcp_cfdc.c
@@ -293,7 +293,7 @@ void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *adapter)
 	}
 	read_unlock_irqrestore(&adapter->port_list_lock, flags);
 
-	shost_for_each_device(sdev, port->adapter->scsi_host) {
+	shost_for_each_device(sdev, adapter->scsi_host) {
 		zfcp_sdev = sdev_to_zfcp(sdev);
 		status = atomic_read(&zfcp_sdev->status);
 		if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||

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