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net: phy: xgene: disable clk on error paths 

There are several error paths in xgene_mdio_probe(),
where clk is left undisabled. The patch fixes them.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Khoroshilov 2017-12-16 00:52:39 +03:00 committed by David S. Miller
parent 6623c0fba1
commit ab14436065
1 changed files with 15 additions and 6 deletions
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21
drivers/net/phy/mdio-xgene.c
View File

@ -194,8 +194,11 @@ static int xgene_mdio_reset(struct xgene_mdio_pdata *pdata)
}
ret = xgene_enet_ecc_init(pdata);
if (ret)
if (ret) {
if (pdata->dev->of_node)
clk_disable_unprepare(pdata->clk);
return ret;
}
xgene_gmac_reset(pdata);
return 0;
@ -388,8 +391,10 @@ static int xgene_mdio_probe(struct platform_device *pdev)
return ret;
mdio_bus = mdiobus_alloc();
if (!mdio_bus)
return -ENOMEM;
if (!mdio_bus) {
ret = -ENOMEM;
goto out_clk;
}
mdio_bus->name = "APM X-Gene MDIO bus";
@ -418,7 +423,7 @@ static int xgene_mdio_probe(struct platform_device *pdev)
mdio_bus->phy_mask = ~0;
ret = mdiobus_register(mdio_bus);
if (ret)
goto out;
goto out_mdiobus;
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_HANDLE(dev), 1,
acpi_register_phy, NULL, mdio_bus, NULL);
@ -426,16 +431,20 @@ static int xgene_mdio_probe(struct platform_device *pdev)
}
if (ret)
goto out;
goto out_mdiobus;
pdata->mdio_bus = mdio_bus;
xgene_mdio_status = true;
return 0;
out:
out_mdiobus:
mdiobus_free(mdio_bus);
out_clk:
if (dev->of_node)
clk_disable_unprepare(pdata->clk);
return ret;
}