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net: phy: fixed: allow setting no update_link callback
fixed_phy_set_link_update() contains an early check against a NULL callback pointer, which basically prevents us from removing any previous callback we may have set. The users of the fp->link_update callback deal with a NULL callback just fine, so we really want to allow "removing" a link_update callback to avoid dangling callback pointers during e.g: module removal. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -168,7 +168,7 @@ int fixed_phy_set_link_update(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 (!link_update || !phydev || !phydev->bus)
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if (!phydev || !phydev->bus)
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return -EINVAL;
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list_for_each_entry(fp, &fmb->phys, node) {
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