netdev - [PATCH net-next v3 4/7] ibmvnic: Remove duplicate memory barriers in tx

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Message-ID: <20240807211809.1259563-5-nnac123@linux.ibm.com>
Date: Wed,  7 Aug 2024 16:18:06 -0500
From: Nick Child <nnac123@...ux.ibm.com>
To: netdev@...r.kernel.org
Cc: bjking1@...ux.ibm.com, haren@...ux.ibm.com, ricklind@...ibm.com,
        Nick Child <nnac123@...ux.ibm.com>
Subject: [PATCH net-next v3 4/7] 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@...ux.ibm.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 58a517ecbda3..256feac588ef 100644
--- 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;
 
-- 
2.43.0