OpenWrt – Rev 1
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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;