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phy: add phy fixup unregister functions

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>From : Woojung Huh <woojung.huh@microchip.com>

Add functions to unregister phy fixup for modules.

int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask)
	Unregister phy fixup from phy_fixup_list per bus_id, phy_uid &
	phy_uid_mask

int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask)
	Unregister phy fixup from phy_fixup_list.
	Use it for fixup registered by phy_register_fixup_for_uid()

int phy_unregister_fixup_for_id(const char *bus_id)
	Unregister phy fixup from phy_fixup_list.
	Use it for fixup registered by phy_register_fixup_for_id()

Signed-off-by: Woojung Huh <woojung.huh@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Woojung.Huh@microchip.com 2016-12-07 20:26:07 +00:00 committed by David S. Miller
parent d2a4dd37f6
commit f38e7a32ee
3 changed files with 60 additions and 0 deletions
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9
Documentation/networking/phy.txt
View File

@ -407,6 +407,15 @@ Board Fixups
The stubs set one of the two matching criteria, and set the other one to
match anything.
When phy_register_fixup() or *_for_uid()/*_for_id() is called at module,
unregister fixup and free allocate memory are required.
Call one of following function before unloading module.
int phy_unregister_fixup(const char *phy_id, u32 phy_uid, u32 phy_uid_mask);
int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask);
int phy_register_fixup_for_id(const char *phy_id);
Standards
IEEE Standard 802.3: CSMA/CD Access Method and Physical Layer Specifications, Section Two:

47
drivers/net/phy/phy_device.c
View File

@ -235,6 +235,53 @@ int phy_register_fixup_for_id(const char *bus_id,
}
EXPORT_SYMBOL(phy_register_fixup_for_id);
/**
* phy_unregister_fixup - remove a phy_fixup from the list
* @bus_id: A string matches fixup->bus_id (or PHY_ANY_ID) in phy_fixup_list
* @phy_uid: A phy id matches fixup->phy_id (or PHY_ANY_UID) in phy_fixup_list
* @phy_uid_mask: Applied to phy_uid and fixup->phy_uid before comparison
*/
int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask)
{
struct list_head *pos, *n;
struct phy_fixup *fixup;
int ret;
ret = -ENODEV;
mutex_lock(&phy_fixup_lock);
list_for_each_safe(pos, n, &phy_fixup_list) {
fixup = list_entry(pos, struct phy_fixup, list);
if ((!strcmp(fixup->bus_id, bus_id)) &&
((fixup->phy_uid & phy_uid_mask) ==
(phy_uid & phy_uid_mask))) {
list_del(&fixup->list);
kfree(fixup);
ret = 0;
break;
}
}
mutex_unlock(&phy_fixup_lock);
return ret;
}
EXPORT_SYMBOL(phy_unregister_fixup);
/* Unregisters a fixup of any PHY with the UID in phy_uid */
int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask)
{
return phy_unregister_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask);
}
EXPORT_SYMBOL(phy_unregister_fixup_for_uid);
/* Unregisters a fixup of the PHY with id string bus_id */
int phy_unregister_fixup_for_id(const char *bus_id)
{
return phy_unregister_fixup(bus_id, PHY_ANY_UID, 0xffffffff);
}
EXPORT_SYMBOL(phy_unregister_fixup_for_id);
/* Returns 1 if fixup matches phydev in bus_id and phy_uid.
* Fixups can be set to match any in one or more fields.
*/

4
include/linux/phy.h
View File

@ -860,6 +860,10 @@ int phy_register_fixup_for_id(const char *bus_id,
int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
int (*run)(struct phy_device *));
int phy_unregister_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask);
int phy_unregister_fixup_for_id(const char *bus_id);
int phy_unregister_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask);
int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable);
int phy_get_eee_err(struct phy_device *phydev);
int phy_ethtool_set_eee(struct phy_device *phydev, struct ethtool_eee *data);