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net: phy: export phy_queue_state_machine 

We face the issue that link change interrupt and link status may be
reported by different PHY layers. As a result the link change
interrupt may occur before the link status changes.
Export phy_queue_state_machine to allow PHY drivers to specify a
delay between link status change interrupt and link status check.

v2:
- change jiffies parameter type to unsigned long

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-05-30 15:11:06 +02:00 committed by David S. Miller
parent 49644e68f4
commit 97b33bdf9b
2 changed files with 6 additions and 4 deletions
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8
drivers/net/phy/phy.c
View File

@ -29,6 +29,8 @@
#include <linux/uaccess.h>
#include <linux/atomic.h>
#define PHY_STATE_TIME HZ
#define PHY_STATE_STR(_state) \
case PHY_##_state: \
return __stringify(_state); \
@ -478,12 +480,12 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd)
}
EXPORT_SYMBOL(phy_mii_ioctl);
static void phy_queue_state_machine(struct phy_device *phydev,
unsigned int secs)
void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies)
{
mod_delayed_work(system_power_efficient_wq, &phydev->state_queue,
secs * HZ);
jiffies);
}
EXPORT_SYMBOL(phy_queue_state_machine);
static void phy_trigger_machine(struct phy_device *phydev)
{

2
include/linux/phy.h
View File

@ -188,7 +188,6 @@ static inline const char *phy_modes(phy_interface_t interface)
#define PHY_INIT_TIMEOUT 100000
#define PHY_STATE_TIME 1
#define PHY_FORCE_TIMEOUT 10
#define PHY_MAX_ADDR 32
@ -1140,6 +1139,7 @@ int phy_driver_register(struct phy_driver *new_driver, struct module *owner);
int phy_drivers_register(struct phy_driver *new_driver, int n,
struct module *owner);
void phy_state_machine(struct work_struct *work);
void phy_queue_state_machine(struct phy_device *phydev, unsigned long jiffies);
void phy_mac_interrupt(struct phy_device *phydev);
void phy_start_machine(struct phy_device *phydev);
void phy_stop_machine(struct phy_device *phydev);