ibmvnic: Remove duplicate memory barriers in tx

send_subcrq_[in]direct() already has a dma memory barrier.
Remove the earlier one.

Signed-off-by: Nick Child <nnac123@linux.ibm.com>
Link: https://patch.msgid.link/20240807211809.1259563-5-nnac123@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 58a517ecbda391a028c699dfc91a8bd70969a5bc..256feac588ef7893915270e4908625ff9ed4cbaf 100644 (file)
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -2459,9 +2459,6 @@ static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
                skb_copy_from_linear_data(skb, dst, skb->len);
        }
 
-       /* post changes to long_term_buff *dst before VIOS accessing it */
-       dma_wmb();
-
        tx_pool->consumer_index =
            (tx_pool->consumer_index + 1) % tx_pool->num_buffers;