From 7086605a6ab57a5a37eb613cfe214fc62d2bb87b Mon Sep 17 00:00:00 2001
From: Giuseppe CAVALLARO <peppe.cavallaro@st.com>
Date: Wed, 12 Oct 2016 15:42:04 +0200
Subject: [PATCH] stmmac: fix error check when init ptp
This patch fixes a problem when propagated the
failure of ptp_clock_register to open function.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre TORGUE <alexandre.torgue@st.com>
Cc: Rayagond Kokatanur <rayagond@vayavyalabs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c | 10 ++++++----
2 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index e838850cc7c3e..6c85b61aaa0bc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1709,8 +1709,8 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
if (init_ptp) {
ret = stmmac_init_ptp(priv);
- if (ret && ret != -EOPNOTSUPP)
- pr_warn("%s: failed PTP initialisation\n", __func__);
+ if (ret)
+ netdev_warn(priv->dev, "PTP support cannot init.\n");
}
#ifdef CONFIG_DEBUG_FS
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
index 6e3b82972ce87..289d52725a6c1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c
@@ -186,10 +186,12 @@ int stmmac_ptp_register(struct stmmac_priv *priv)
priv->device);
if (IS_ERR(priv->ptp_clock)) {
priv->ptp_clock = NULL;
- pr_err("ptp_clock_register() failed on %s\n", priv->dev->name);
- } else if (priv->ptp_clock)
- pr_debug("Added PTP HW clock successfully on %s\n",
- priv->dev->name);
+ return PTR_ERR(priv->ptp_clock);
+ }
+
+ spin_lock_init(&priv->ptp_lock);
+
+ netdev_dbg(priv->dev, "Added PTP HW clock successfully\n");
return 0;
}