netdev - [PATCH net-next] net: ethernet: mtk_eth_soc: fix error code in mtk_flow_offload

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Date:   Thu, 19 May 2022 17:08:00 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Felix Fietkau <nbd@....name>
Cc:     John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        netdev@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH net-next] net: ethernet: mtk_eth_soc: fix error code in
 mtk_flow_offload_replace()

Preserve the error code from mtk_foe_entry_commit().  Do not return
success.

Fixes: c4f033d9e03e ("net: ethernet: mtk_eth_soc: rework hardware flow table management")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
The original code used to preserve the error code.  I'm pretty sure
returning an error is the correct thing.  I guess please double check
this patch.

 drivers/net/ethernet/mediatek/mtk_ppe_offload.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
index 1fe31058b0f2..a641a44323a9 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
@@ -434,7 +434,8 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)
 	memcpy(&entry->data, &foe, sizeof(entry->data));
 	entry->wed_index = wed_index;
 
-	if (mtk_foe_entry_commit(eth->ppe, entry) < 0)
+	err = mtk_foe_entry_commit(eth->ppe, entry);
+	if (err < 0)
 		goto free;
 
 	err = rhashtable_insert_fast(&eth->flow_table, &entry->node,
-- 
2.35.1