Re: [PATCH] phylib: Make PHYs children of their MDIO bus, not the bus' parent.

From: Sergei Shtylyov
Date: Thu Nov 19 2015 - 15:51:46 EST


Hello.

On 08/22/2015 02:16 AM, David Daney wrote:

From: David Daney <david.daney@xxxxxxxxxx>

commit 18ee49ddb0d2 ("phylib: rename mii_bus::dev to mii_bus::parent")
changed the parent of PHY devices from the bus to the bus parent.

Then, commit 4dea547fef1b ("phylib: rework to prepare for OF
registration of PHYs") moved the code into phy_device.c

At this point, it is somewhat unclear why the change was seen as
necessary. But, when we look at the device model tree in
/sys/devices, it is clearly incorrect. The PHYs should be children of
their MDIO bus.

Change the PHY's parent device to be the MDIO bus device.

Cc: Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxxxx>
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
---
drivers/net/phy/phy_device.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 0302483..55f0178 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -176,7 +176,7 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,
if (c45_ids)
dev->c45_ids = *c45_ids;
dev->bus = bus;
- dev->dev.parent = bus->parent;
+ dev->dev.parent = &bus->dev;
dev->dev.bus = &mdio_bus_type;
dev->irq = bus->irq != NULL ? bus->irq[addr] : PHY_POLL;
dev_set_name(&dev->dev, PHY_ID_FMT, bus->id, addr);

This patch makes my sh_eth driver fail to connect to PHY usinjg of_phy_connect(). (The ravb driver fails too but for some other reason.)

MBR, Sergei

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