netdev - [PATCH net 2/3] ibmvnic: remove unnecessary rmb() inside ibmvnic

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Message-Id: <20210121061710.53217-3-ljp@linux.ibm.com>
Date:   Thu, 21 Jan 2021 00:17:09 -0600
From:   Lijun Pan <ljp@...ux.ibm.com>
To:     netdev@...r.kernel.org
Cc:     Lijun Pan <ljp@...ux.ibm.com>
Subject: [PATCH net 2/3] ibmvnic: remove unnecessary rmb() inside ibmvnic_poll

rmb() was introduced to load rx_scrq->msgs after calling
pending_scrq(). Now since pending_scrq() itself already
has dma_rmb() at the end of the function, rmb() is
duplicated and can be removed.

Fixes: ec20f36bb41a ("ibmvnic: Correctly re-enable interrupts in NAPI polling routine")
Signed-off-by: Lijun Pan <ljp@...ux.ibm.com>
---
 drivers/net/ethernet/ibm/ibmvnic.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c
index 8e043683610f..933e8fb71a8b 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -2577,7 +2577,6 @@ static int ibmvnic_poll(struct napi_struct *napi, int budget)
 		if (napi_complete_done(napi, frames_processed)) {
 			enable_scrq_irq(adapter, rx_scrq);
 			if (pending_scrq(adapter, rx_scrq)) {
-				rmb();
 				if (napi_reschedule(napi)) {
 					disable_scrq_irq(adapter, rx_scrq);
 					goto restart_poll;
-- 
2.23.0