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path: root/drivers/net/ethernet/intel/idpf/idpf_controlq.c
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Diffstat (limited to 'drivers/net/ethernet/intel/idpf/idpf_controlq.c')
-rw-r--r--drivers/net/ethernet/intel/idpf/idpf_controlq.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/net/ethernet/intel/idpf/idpf_controlq.c b/drivers/net/ethernet/intel/idpf/idpf_controlq.c
index c7f43d2fcd..4849590a55 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_controlq.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_controlq.c
@@ -516,6 +516,8 @@ post_buffs_out:
/* Wrap to end of end ring since current ntp is 0 */
cq->next_to_post = cq->ring_size - 1;
+ dma_wmb();
+
wr32(hw, cq->reg.tail, cq->next_to_post);
}
@@ -546,11 +548,6 @@ int idpf_ctlq_recv(struct idpf_ctlq_info *cq, u16 *num_q_msg,
int err = 0;
u16 i;
- if (*num_q_msg == 0)
- return 0;
- else if (*num_q_msg > cq->ring_size)
- return -EBADR;
-
/* take the lock before we start messing with the ring */
mutex_lock(&cq->cq_lock);