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net: phy: remove state PHY_FORCING

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In the early days of phylib we had a functionality that changed to the
next lower speed in fixed mode if no link was established after a
certain period of time. This functionality has been removed years ago,
and state PHY_FORCING isn't needed any longer. Instead we can go from
UP to RUNNING or NOLINK directly (same as in autoneg mode).

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-06-04 23:02:34 +02:00 committed by David S. Miller
parent fe3475af3b
commit 2bd229df5e
2 changed files with 2 additions and 35 deletions
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26
drivers/net/phy/phy.c
View File

@ -43,7 +43,6 @@ static const char *phy_state_to_str(enum phy_state st)
PHY_STATE_STR(UP)
PHY_STATE_STR(RUNNING)
PHY_STATE_STR(NOLINK)
PHY_STATE_STR(FORCING)
PHY_STATE_STR(HALTED)
}
@ -577,15 +576,8 @@ int phy_start_aneg(struct phy_device *phydev)
if (err < 0)
goto out_unlock;
if (phy_is_started(phydev)) {
if (phydev->autoneg == AUTONEG_ENABLE) {
err = phy_check_link_status(phydev);
} else {
phydev->state = PHY_FORCING;
phydev->link_timeout = PHY_FORCE_TIMEOUT;
}
}
if (phy_is_started(phydev))
err = phy_check_link_status(phydev);
out_unlock:
mutex_unlock(&phydev->lock);
@ -951,20 +943,6 @@ void phy_state_machine(struct work_struct *work)
case PHY_RUNNING:
err = phy_check_link_status(phydev);
break;
case PHY_FORCING:
err = genphy_update_link(phydev);
if (err)
break;
if (phydev->link) {
phydev->state = PHY_RUNNING;
phy_link_up(phydev);
} else {
if (0 == phydev->link_timeout--)
needs_aneg = true;
phy_link_down(phydev, false);
}
break;
case PHY_HALTED:
if (phydev->link) {
phydev->link = 0;

11
include/linux/phy.h
View File

@ -297,12 +297,6 @@ struct phy_device *mdiobus_scan(struct mii_bus *bus, int addr);
* - irq or timer will set RUNNING if link comes back
* - phy_stop moves to HALTED
*
* FORCING: PHY is being configured with forced settings
* - if link is up, move to RUNNING
* - If link is down, we drop to the next highest setting, and
* retry (FORCING) after a timeout
* - phy_stop moves to HALTED
*
* RUNNING: PHY is currently up, running, and possibly sending
* and/or receiving packets
* - irq or timer will set NOLINK if link goes down
@ -319,7 +313,6 @@ enum phy_state {
PHY_UP,
PHY_RUNNING,
PHY_NOLINK,
PHY_FORCING,
};
/**
@ -347,8 +340,6 @@ struct phy_c45_device_ids {
* loopback_enabled: Set true if this phy has been loopbacked successfully.
* state: state of the PHY for management purposes
* dev_flags: Device-specific flags used by the PHY driver.
* link_timeout: The number of timer firings to wait before the
* giving up on the current attempt at acquiring a link
* irq: IRQ number of the PHY's interrupt (-1 if none)
* phy_timer: The timer for handling the state machine
* attached_dev: The attached enet driver's device instance ptr
@ -416,8 +407,6 @@ struct phy_device {
/* Energy efficient ethernet modes which should be prohibited */
u32 eee_broken_modes;
int link_timeout;
#ifdef CONFIG_LED_TRIGGER_PHY
struct phy_led_trigger *phy_led_triggers;
unsigned int phy_num_led_triggers;