[PATCH 1/2] bnxt_en: Use refcount_t for refcount

[Chuhong Yuan]

refcount_t is better for reference counters since its
implementation can prevent overflows.
So convert atomic_t ref counters to refcount_t.

Signed-off-by: Chuhong Yuan <hsleste...@gmail.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 8 ++++----
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index fc77caf0a076..eb7ed34639e2 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -49,7 +49,7 @@ static int bnxt_register_dev(struct bnxt_en_dev *edev, int 
ulp_id,
                        return -ENOMEM;
        }
 
-       atomic_set(&ulp->ref_count, 0);
+       refcount_set(&ulp->ref_count, 0);
        ulp->handle = handle;
        rcu_assign_pointer(ulp->ulp_ops, ulp_ops);
 
@@ -87,7 +87,7 @@ static int bnxt_unregister_dev(struct bnxt_en_dev *edev, int 
ulp_id)
        synchronize_rcu();
        ulp->max_async_event_id = 0;
        ulp->async_events_bmap = NULL;
-       while (atomic_read(&ulp->ref_count) != 0 && i < 10) {
+       while (refcount_read(&ulp->ref_count) != 0 && i < 10) {
                msleep(100);
                i++;
        }
@@ -246,12 +246,12 @@ static int bnxt_send_msg(struct bnxt_en_dev *edev, int 
ulp_id,
 
 static void bnxt_ulp_get(struct bnxt_ulp *ulp)
 {
-       atomic_inc(&ulp->ref_count);
+       refcount_inc(&ulp->ref_count);
 }
 
 static void bnxt_ulp_put(struct bnxt_ulp *ulp)
 {
-       atomic_dec(&ulp->ref_count);
+       refcount_dec(&ulp->ref_count);
 }
 
 void bnxt_ulp_stop(struct bnxt *bp)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h 
b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
index cd78453d0bf0..fc4aa582d190 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h
@@ -52,7 +52,7 @@ struct bnxt_ulp {
        u16             max_async_event_id;
        u16             msix_requested;
        u16             msix_base;
-       atomic_t        ref_count;
+       refcount_t      ref_count;
 };
 
 struct bnxt_en_dev {
-- 
2.20.1