Commit 5ed3fea0 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'phy-unbind-crash' 



Florian Fainelli says:

====================
net: phy: Fix PHY unbind crash

This fixes crashes when the PHY driver is no longer bound to the device.

There is still a fair amount of work to be done to get the unbind -> bind
sequent to result in a functional state, but that will be net-next material.

These two problems existed for as long as PHYLIB as been around.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents cd2b7087 25149ef9

drivers/net/phy/phy.c

+22 −4
Original line number Diff line number Diff line
@@ -580,7 +580,7 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) 
		return 0;



	case SIOCSHWTSTAMP:

		if (phydev->drv->hwtstamp)

		if (phydev->drv && phydev->drv->hwtstamp)

			return phydev->drv->hwtstamp(phydev, ifr);

		/* fall through */
@@ -603,6 +603,9 @@ int phy_start_aneg(struct phy_device *phydev) 
{

	int err;



	if (!phydev->drv)

		return -EIO;



	mutex_lock(&phydev->lock);



	if (AUTONEG_DISABLE == phydev->autoneg)
@@ -975,7 +978,7 @@ void phy_state_machine(struct work_struct *work) 


	old_state = phydev->state;



	if (phydev->drv->link_change_notify)

	if (phydev->drv && phydev->drv->link_change_notify)

		phydev->drv->link_change_notify(phydev);



	switch (phydev->state) {
@@ -1286,6 +1289,9 @@ EXPORT_SYMBOL(phy_write_mmd_indirect); 
 */

int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)

{

	if (!phydev->drv)

		return -EIO;



	/* According to 802.3az,the EEE is supported only in full duplex-mode.

	 * Also EEE feature is active when core is operating with MII, GMII

	 * or RGMII (all kinds). Internal PHYs are also allowed to proceed and
@@ -1363,6 +1369,9 @@ EXPORT_SYMBOL(phy_init_eee); 
 */

int phy_get_eee_err(struct phy_device *phydev)

{

	if (!phydev->drv)

		return -EIO;



	return phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_WK_ERR, MDIO_MMD_PCS);

}

EXPORT_SYMBOL(phy_get_eee_err);
@@ -1379,6 +1388,9 @@ int phy_ethtool_get_eee(struct phy_device *phydev, struct ethtool_eee *data) 
{

	int val;



	if (!phydev->drv)

		return -EIO;



	/* Get Supported EEE */

	val = phy_read_mmd_indirect(phydev, MDIO_PCS_EEE_ABLE, MDIO_MMD_PCS);

	if (val < 0)
@@ -1412,6 +1424,9 @@ int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data) 
{

	int val = ethtool_adv_to_mmd_eee_adv_t(data->advertised);



	if (!phydev->drv)

		return -EIO;



	/* Mask prohibited EEE modes */

	val &= ~phydev->eee_broken_modes;
@@ -1423,7 +1438,7 @@ EXPORT_SYMBOL(phy_ethtool_set_eee); 


int phy_ethtool_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)

{

	if (phydev->drv->set_wol)

	if (phydev->drv && phydev->drv->set_wol)

		return phydev->drv->set_wol(phydev, wol);



	return -EOPNOTSUPP;
@@ -1432,7 +1447,7 @@ EXPORT_SYMBOL(phy_ethtool_set_wol); 


void phy_ethtool_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol)

{

	if (phydev->drv->get_wol)

	if (phydev->drv && phydev->drv->get_wol)

		phydev->drv->get_wol(phydev, wol);

}

EXPORT_SYMBOL(phy_ethtool_get_wol);
@@ -1468,6 +1483,9 @@ int phy_ethtool_nway_reset(struct net_device *ndev) 
	if (!phydev)

		return -ENODEV;



	if (!phydev->drv)

		return -EIO;



	return genphy_restart_aneg(phydev);

}

EXPORT_SYMBOL(phy_ethtool_nway_reset);

drivers/net/phy/phy_device.c

+5 −3
Original line number Diff line number Diff line
@@ -1094,7 +1094,7 @@ int phy_suspend(struct phy_device *phydev) 
	if (wol.wolopts)

		return -EBUSY;



	if (phydrv->suspend)

	if (phydev->drv && phydrv->suspend)

		ret = phydrv->suspend(phydev);



	if (ret)
@@ -1111,7 +1111,7 @@ int phy_resume(struct phy_device *phydev) 
	struct phy_driver *phydrv = to_phy_driver(phydev->mdio.dev.driver);

	int ret = 0;



	if (phydrv->resume)

	if (phydev->drv && phydrv->resume)

		ret = phydrv->resume(phydev);



	if (ret)
@@ -1784,11 +1784,13 @@ static int phy_remove(struct device *dev) 
{

	struct phy_device *phydev = to_phy_device(dev);



	cancel_delayed_work_sync(&phydev->state_queue);



	mutex_lock(&phydev->lock);

	phydev->state = PHY_DOWN;

	mutex_unlock(&phydev->lock);



	if (phydev->drv->remove)

	if (phydev->drv && phydev->drv->remove)

		phydev->drv->remove(phydev);

	phydev->drv = NULL;

include/linux/phy.h

+3 −0
Original line number Diff line number Diff line
@@ -807,6 +807,9 @@ int phy_stop_interrupts(struct phy_device *phydev); 


static inline int phy_read_status(struct phy_device *phydev)

{

	if (!phydev->drv)

		return -EIO;



	return phydev->drv->read_status(phydev);

}

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