net/bnxt: fix race between interrupt handler and dev config

[dpdk.git] / drivers / net / bnxt / bnxt_irq.c

diff --git a/drivers/net/bnxt/bnxt_irq.c b/drivers/net/bnxt/bnxt_irq.c
index 6c5bcfb..4feb637 100644 (file)
--- a/drivers/net/bnxt/bnxt_irq.c
+++ b/drivers/net/bnxt/bnxt_irq.c
@@ -30,9 +30,12 @@ void bnxt_int_handler(void *param)
                return;
 
        raw_cons = cpr->cp_raw_cons;
+       pthread_mutex_lock(&bp->def_cp_lock);
        while (1) {
-               if (!cpr || !cpr->cp_ring_struct || !cpr->cp_db.doorbell)
+               if (!cpr || !cpr->cp_ring_struct || !cpr->cp_db.doorbell) {
+                       pthread_mutex_unlock(&bp->def_cp_lock);
                        return;
+               }
 
                cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
                cmp = &cpr->cp_desc_ring[cons];
@@ -49,6 +52,8 @@ void bnxt_int_handler(void *param)
                bnxt_db_nq_arm(cpr);
        else
                B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
+
+       pthread_mutex_unlock(&bp->def_cp_lock);
 }
 
 int bnxt_free_int(struct bnxt *bp)