phy: fixed-phy: properly validate phy in fixed_phy_update_state()
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>
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@ -220,7 +220,7 @@ int fixed_phy_update_state(struct phy_device *phydev,
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struct fixed_mdio_bus *fmb = &platform_fmb;
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struct fixed_phy *fp;
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if (!phydev || !phydev->bus)
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if (!phydev || phydev->bus != fmb->mii_bus)
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return -EINVAL;
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list_for_each_entry(fp, &fmb->phys, node) {
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