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phy: fixed-phy: properly validate phy in fixed_phy_update_state()

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Validate that the phy_device passed into fixed_phy_update_state() is a
fixed-phy device before walking the list of phys for a fixed phy at the
same address.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2015-09-24 20:36:23 +01:00 committed by David S. Miller
parent 04d53b20fe
commit d618bf2bfd
1 changed files with 1 additions and 1 deletions
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2
drivers/net/phy/fixed_phy.c
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@ -220,7 +220,7 @@ int fixed_phy_update_state(struct phy_device *phydev,
struct fixed_mdio_bus *fmb = &platform_fmb;
struct fixed_phy *fp;
if (!phydev || !phydev->bus)
if (!phydev || phydev->bus != fmb->mii_bus)
return -EINVAL;
list_for_each_entry(fp, &fmb->phys, node) {