netdev - [PATCH net] nfp: fix the access to management firmware hanging

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Message-Id: <20220829101651.633840-1-simon.horman@corigine.com>
Date:   Mon, 29 Aug 2022 12:16:51 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, oss-drivers@...igine.com
Subject: [PATCH net] nfp: fix the access to management firmware hanging

From: Gao Xiao <gao.xiao@...igine.com>

When running `ethtool -p` with the old management firmware,
the management firmware resource is not correctly released,
which causes firmware related malfunction: all the access
to management firmware hangs.

It releases the management firmware resource when set id
mode operation is not supported.

Fixes: ccb9bc1dfa44 ("nfp: add 'ethtool --identify' support")
Signed-off-by: Gao Xiao <gao.xiao@...igine.com>
Reviewed-by: Louis Peens <louis.peens@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
---
 drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c
index edd300033735..4cc38799eabc 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_eth.c
@@ -507,6 +507,7 @@ int nfp_eth_set_idmode(struct nfp_cpp *cpp, unsigned int idx, bool state)
 	if (nfp_nsp_get_abi_ver_minor(nsp) < 32) {
 		nfp_err(nfp_nsp_cpp(nsp),
 			"set id mode operation not supported, please update flash\n");
+		nfp_eth_config_cleanup_end(nsp);
 		return -EOPNOTSUPP;
 	}
 
-- 
2.30.2