[patch] zfcp: spin_lock_irqsave() is not nestable

[Dan Carpenter]

We accidentally overwrite the original saved value of "flags" so that
we can't re-enable IRQs at the end of the function.  Presumably this
function is mostly called with IRQs disabled or it would be obvious in
testing.

Fixes: aceeffbb59bb ("zfcp: trace full payload of all SAN records 
(req,resp,iels)")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 637cf89..5810019 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -384,7 +384,7 @@ void zfcp_dbf_san(char *tag, struct zfcp_dbf *dbf,
        /* if (len > rec_len):
         * dump data up to cap_len ignoring small duplicate in rec->payload
         */
-       spin_lock_irqsave(&dbf->pay_lock, flags);
+       spin_lock(&dbf->pay_lock);
        memset(payload, 0, sizeof(*payload));
        memcpy(payload->area, paytag, ZFCP_DBF_TAG_LEN);
        payload->fsf_req_id = req_id;