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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2017-12-16 00:52:39 +0300
committerDavid S. Miller <davem@davemloft.net>2017-12-18 15:09:42 -0500
commitab14436065c8066c265540312742390d6d07ddd2 (patch)
tree8c4804240dd25a9bcd3e809af7094dfdbeb28f59
parent6623c0fba10ef45b64ca213ad5dec926f37fa9a0 (diff)
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>
-rw-r--r--drivers/net/phy/mdio-xgene.c21
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/net/phy/mdio-xgene.c b/drivers/net/phy/mdio-xgene.c
index bfd3090fb055..07c6048200c6 100644
--- a/drivers/net/phy/mdio-xgene.c
+++ b/drivers/net/phy/mdio-xgene.c
@@ -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;
}