From: Thierry Reding <treding@xxxxxxxxxx>
If an error occurs while opening the device, make sure to disable the
PTP reference clock.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 7c38c9baf238..6060410d2b9e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1754,6 +1754,13 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
return 0;
}
+static void stmmac_hw_teardown(struct net_device *dev)
+{
+ struct stmmac_priv *priv = netdev_priv(dev);
+
+ clk_disable_unprepare(priv->plat->clk_ptp_ref);
+}
+
/**
* stmmac_open - open entry point of the driver
* @dev : pointer to the device structure.
@@ -1863,6 +1870,7 @@ static int stmmac_open(struct net_device *dev)
phy_stop(dev->phydev);
del_timer_sync(&priv->txtimer);
+ stmmac_hw_teardown(dev);
init_error:
free_dma_desc_resources(priv);
dma_desc_error:
--
2.12.0
--
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