linux-kernel - [PATCH net-next 4/6] net: ipa: simplify endpoint transaction completion

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Message-Id: <20220610154616.249304-5-elder@linaro.org>
Date:   Fri, 10 Jun 2022 10:46:13 -0500
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     mka@...omium.org, evgreen@...omium.org, bjorn.andersson@...aro.org,
        quic_cpratapa@...cinc.com, quic_avuyyuru@...cinc.com,
        quic_jponduru@...cinc.com, quic_subashab@...cinc.com,
        elder@...nel.org, netdev@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 4/6] net: ipa: simplify endpoint transaction completion

When a GSI transaction completes, ipa_endpoint_trans_complete() is
eventually called.  That handles TX and RX completions separately,
but ipa_endpoint_tx_complete() is a no-op.

Instead, have ipa_endpoint_trans_complete() return immediately for a
TX transaction, and incorporate code from ipa_endpoint_rx_complete()
to handle RX transactions.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_endpoint.c | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 86ef91f83eb68..66d2bfdf9e423 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1368,18 +1368,14 @@ static void ipa_endpoint_status_parse(struct ipa_endpoint *endpoint,
 	}
 }
 
-/* Complete a TX transaction, command or from ipa_endpoint_skb_tx() */
-static void ipa_endpoint_tx_complete(struct ipa_endpoint *endpoint,
-				     struct gsi_trans *trans)
-{
-}
-
-/* Complete transaction initiated in ipa_endpoint_replenish_one() */
-static void ipa_endpoint_rx_complete(struct ipa_endpoint *endpoint,
-				     struct gsi_trans *trans)
+void ipa_endpoint_trans_complete(struct ipa_endpoint *endpoint,
+				 struct gsi_trans *trans)
 {
 	struct page *page;
 
+	if (endpoint->toward_ipa)
+		return;
+
 	if (trans->cancelled)
 		goto done;
 
@@ -1393,15 +1389,6 @@ static void ipa_endpoint_rx_complete(struct ipa_endpoint *endpoint,
 	ipa_endpoint_replenish(endpoint);
 }
 
-void ipa_endpoint_trans_complete(struct ipa_endpoint *endpoint,
-				 struct gsi_trans *trans)
-{
-	if (endpoint->toward_ipa)
-		ipa_endpoint_tx_complete(endpoint, trans);
-	else
-		ipa_endpoint_rx_complete(endpoint, trans);
-}
-
 void ipa_endpoint_trans_release(struct ipa_endpoint *endpoint,
 				struct gsi_trans *trans)
 {
-- 
2.34.1