netdev - [PATCH AUTOSEL 4.19 252/252] mlxsw: spectrum

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Date:   Fri, 14 Feb 2020 11:11:47 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Ido Schimmel <idosch@...lanox.com>,
        "David S . Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 252/252] mlxsw: spectrum_dpipe: Add missing error path

From: Ido Schimmel <idosch@...lanox.com>

[ Upstream commit 3a99cbb6fa7bca1995586ec2dc21b0368aad4937 ]

In case devlink_dpipe_entry_ctx_prepare() failed, release RTNL that was
previously taken and free the memory allocated by
mlxsw_sp_erif_entry_prepare().

Fixes: 2ba5999f009d ("mlxsw: spectrum: Add Support for erif table entries access")
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
index 41e607a14846d..4fe193c4fa55d 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
@@ -215,7 +215,7 @@ mlxsw_sp_dpipe_table_erif_entries_dump(void *priv, bool counters_enabled,
 start_again:
 	err = devlink_dpipe_entry_ctx_prepare(dump_ctx);
 	if (err)
-		return err;
+		goto err_ctx_prepare;
 	j = 0;
 	for (; i < rif_count; i++) {
 		struct mlxsw_sp_rif *rif = mlxsw_sp_rif_by_index(mlxsw_sp, i);
@@ -247,6 +247,7 @@ mlxsw_sp_dpipe_table_erif_entries_dump(void *priv, bool counters_enabled,
 	return 0;
 err_entry_append:
 err_entry_get:
+err_ctx_prepare:
 	rtnl_unlock();
 	devlink_dpipe_entry_clear(&entry);
 	return err;
-- 
2.20.1