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net: arc_emac: Fix memleak in arc_mdio_probe

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[ Upstream commit e2d79cd8875fa8c3cc7defa98a8cc99a1ed0c62f ]

When devm_gpiod_get_optional() fails, bus should be
freed just like when of_mdiobus_register() fails.

Fixes: 1bddd96cba ("net: arc_emac: support the phy reset for emac driver")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dinghao Liu 2020-08-23 16:56:47 +08:00 committed by Greg Kroah-Hartman
parent fb3a780e7a
commit 9986cb065b
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/arc/emac_mdio.c
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@ -153,6 +153,7 @@ int arc_mdio_probe(struct arc_emac_priv *priv)
if (IS_ERR(data->reset_gpio)) {
error = PTR_ERR(data->reset_gpio);
dev_err(priv->dev, "Failed to request gpio: %d\n", error);
mdiobus_free(bus);
return error;
}