4.9-stable review patch. If anyone has any objections, please let me know.
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From: Alexey Khoroshilov khoroshilov@ispras.ru
[ Upstream commit ab14436065c8066c265540312742390d6d07ddd2 ]
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 Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/phy/mdio-xgene.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-)
--- a/drivers/net/phy/mdio-xgene.c +++ b/drivers/net/phy/mdio-xgene.c @@ -197,8 +197,11 @@ static int xgene_mdio_reset(struct xgene }
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; @@ -364,8 +367,10 @@ static int xgene_mdio_probe(struct platf 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";
@@ -394,7 +399,7 @@ static int xgene_mdio_probe(struct platf 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); @@ -402,16 +407,20 @@ static int xgene_mdio_probe(struct platf }
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; }