netdev - [PATCH] octeontx2-pf: handle otx2_mbox_get

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Message-Id: <20250412183327.3550970-1-chenyuan0y@gmail.com>
Date: Sat, 12 Apr 2025 13:33:27 -0500
From: Chenyuan Yang <chenyuan0y@...il.com>
To: sgoutham@...vell.com,
	gakula@...vell.com,
	sbhatta@...vell.com,
	hkelam@...vell.com,
	bbhushan2@...vell.com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chenyuan Yang <chenyuan0y@...il.com>
Subject: [PATCH] octeontx2-pf: handle otx2_mbox_get_rsp errors

Adding error pointer check after calling otx2_mbox_get_rsp().

This is similar to the commit bd3110bc102a
("octeontx2-pf: handle otx2_mbox_get_rsp errors in otx2_flows.c").

Signed-off-by: Chenyuan Yang <chenyuan0y@...il.com>
Fixes: 6c40ca957fe5 ("octeontx2-pf: Adds TC offload support")
---
 drivers/net/ethernet/marvell/octeontx2/nic/rep.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
index 04e08e06f30f..7153a71dfc86 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/rep.c
@@ -67,6 +67,8 @@ static int rvu_rep_mcam_flow_init(struct rep_dev *rep)
 
 		rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp
 			(&priv->mbox.mbox, 0, &req->hdr);
+		if (IS_ERR(rsp))
+			goto exit;
 
 		for (ent = 0; ent < rsp->count; ent++)
 			rep->flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent];
-- 
2.34.1