You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.4 KiB
44 lines
1.4 KiB
7 years ago
|
From df0c8d911abf6ba97b2c2fc3c5a12769e0b081a3 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Florian Fainelli <f.fainelli@gmail.com>
|
||
|
|
Date: Thu, 11 May 2017 11:24:16 -0700
|
||
|
|
Subject: [PATCH] net: phy: Call bus->reset() after releasing PHYs from reset
|
||
|
|
|
||
|
|
The API convention makes it that a given MDIO bus reset should be able
|
||
|
|
to access PHY devices in its reset() callback and perform additional
|
||
|
|
MDIO accesses in order to bring the bus and PHYs in a working state.
|
||
|
|
|
||
|
|
Commit 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") broke that
|
||
|
|
contract by first calling bus->reset() and then release all PHYs from
|
||
|
|
reset using their shared GPIO line, so restore the expected
|
||
|
|
functionality here.
|
||
|
|
|
||
|
|
Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.")
|
||
|
|
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
|
||
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
|
---
|
||
|
|
drivers/net/phy/mdio_bus.c | 6 +++---
|
||
|
|
1 file changed, 3 insertions(+), 3 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/phy/mdio_bus.c
|
||
|
|
+++ b/drivers/net/phy/mdio_bus.c
|
||
|
|
@@ -331,9 +331,6 @@ int __mdiobus_register(struct mii_bus *b
|
||
|
|
|
||
|
|
mutex_init(&bus->mdio_lock);
|
||
|
|
|
||
|
|
- if (bus->reset)
|
||
|
|
- bus->reset(bus);
|
||
|
|
-
|
||
|
|
/* de-assert bus level PHY GPIO resets */
|
||
|
|
if (bus->num_reset_gpios > 0) {
|
||
|
|
bus->reset_gpiod = devm_kcalloc(&bus->dev,
|
||
|
|
@@ -363,6 +360,9 @@ int __mdiobus_register(struct mii_bus *b
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
+ if (bus->reset)
|
||
|
|
+ bus->reset(bus);
|
||
|
|
+
|
||
|
|
for (i = 0; i < PHY_MAX_ADDR; i++) {
|
||
|
|
if ((bus->phy_mask & (1 << i)) == 0) {
|
||
|
|
struct phy_device *phydev;
|