scsi: qedf: fixup compilation warning about atomic_t usage

Based on an original patch by Hannes Reinecke.

The driver didn't follow the atomic_t vs refcount_t change, and anyway
one should be using kref_read() instead of accessing the counter inside
an kref.

Fixes: 61d8658b4a435e ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.)
Cc: Hannes Reinecke <hare@suse.de>
Cc: Nilesh Javali <nilesh.javali@cavium.com>
Signed-off-by: Dupuis, Chad <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/qedf/qedf_els.c b/drivers/scsi/qedf/qedf_els.c
index 78f1c25..59f3e5c 100644 (file)
--- a/drivers/scsi/qedf/qedf_els.c
+++ b/drivers/scsi/qedf/qedf_els.c
@@ -183,7 +183,7 @@ static void qedf_rrq_compl(struct qedf_els_cb_arg *cb_arg)
            rrq_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
                cancel_delayed_work_sync(&orig_io_req->timeout_work);
 
-       refcount = atomic_read(&orig_io_req->refcount.refcount);
+       refcount = kref_read(&orig_io_req->refcount);
        QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "rrq_compl: orig io = %p,"
                   " orig xid = 0x%x, rrq_xid = 0x%x, refcount=%d\n",
                   orig_io_req, orig_io_req->xid, rrq_req->xid, refcount);
@@ -474,7 +474,7 @@ static void qedf_srr_compl(struct qedf_els_cb_arg *cb_arg)
            srr_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
                cancel_delayed_work_sync(&orig_io_req->timeout_work);
 
-       refcount = atomic_read(&orig_io_req->refcount.refcount);
+       refcount = kref_read(&orig_io_req->refcount);
        QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p,"
                   " orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n",
                   orig_io_req, orig_io_req->xid, srr_req->xid, refcount);
@@ -758,7 +758,7 @@ static void qedf_rec_compl(struct qedf_els_cb_arg *cb_arg)
            rec_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
                cancel_delayed_work_sync(&orig_io_req->timeout_work);
 
-       refcount = atomic_read(&orig_io_req->refcount.refcount);
+       refcount = kref_read(&orig_io_req->refcount);
        QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p,"
                   " orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n",
                   orig_io_req, orig_io_req->xid, rec_req->xid, refcount);

diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c
index 486c045..ee0dcf9 100644 (file)
--- a/drivers/scsi/qedf/qedf_io.c
+++ b/drivers/scsi/qedf/qedf_io.c
@@ -998,7 +998,7 @@ static void qedf_trace_io(struct qedf_rport *fcport, struct qedf_ioreq *io_req,
        io_log->sg_count = scsi_sg_count(sc_cmd);
        io_log->result = sc_cmd->result;
        io_log->jiffies = jiffies;
-       io_log->refcount = atomic_read(&io_req->refcount.refcount);
+       io_log->refcount = kref_read(&io_req->refcount);
 
        if (direction == QEDF_IO_TRACE_REQ) {
                /* For requests we only care abot the submission CPU */
@@ -1340,7 +1340,7 @@ void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
                        /* Good I/O completion */
                        sc_cmd->result = DID_OK << 16;
                } else {
-                       refcount = atomic_read(&io_req->refcount.refcount);
+                       refcount = kref_read(&io_req->refcount);
                        QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
                            "%d:0:%d:%d xid=0x%0x op=0x%02x "
                            "lba=%02x%02x%02x%02x cdb_status=%d "
@@ -1425,7 +1425,7 @@ void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
        qedf_unmap_sg_list(qedf, io_req);
 
        sc_cmd->result = result << 16;
-       refcount = atomic_read(&io_req->refcount.refcount);
+       refcount = kref_read(&io_req->refcount);
        QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, "%d:0:%d:%d: Completing "
            "sc_cmd=%p result=0x%08x op=0x%02x lba=0x%02x%02x%02x%02x, "
            "allowed=%d retries=%d refcount=%d.\n",
@@ -1556,7 +1556,7 @@ static void qedf_flush_els_req(struct qedf_ctx *qedf,
 {
        QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
            "Flushing ELS request xid=0x%x refcount=%d.\n", els_req->xid,
-           atomic_read(&els_req->refcount.refcount));
+           kref_read(&els_req->refcount));
 
        /*
         * Need to distinguish this from a timeout when calling the