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net: dsa: microchip: call phy_remove_link_mode during probe 

[ Upstream commit 3506b2f42d ]

When doing "ip link set dev ... up" for a ksz9477 backed link,
ksz9477_phy_setup is called and it calls phy_remove_link_mode to remove
1000baseT HDX. During phy_remove_link_mode, phy_advertise_supported is
called. Doing so reverts any previous change to advertised link modes
e.g. using a udevd .link file.

phy_remove_link_mode is not meant to be used while opening a link and
should be called during phy probe when the link is not yet available to
userspace.

Therefore move the phy_remove_link_mode calls into
ksz9477_switch_register. It indirectly calls dsa_register_switch, which
creates the relevant struct phy_devices and we update the link modes
right after that. At that time dev->features is already initialized by
ksz9477_switch_detect.

Remove phy_setup from ksz_dev_ops as no users remain.

Link: https://lore.kernel.org/netdev/20200715192722.GD1256692@lunn.ch/
Fixes: 42fc6a4c61 ("net: dsa: microchip: prepare PHY for proper advertisement")
Signed-off-by: Helmut Grohne <helmut.grohne@intenta.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Helmut Grohne 2020-07-21 13:07:39 +02:00 committed by Greg Kroah-Hartman
parent 4997b311c0
commit 99a5e865cb
3 changed files with 23 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/net/dsa/microchip/ksz9477.c
View File

@ -976,23 +976,6 @@ static void ksz9477_port_mirror_del(struct dsa_switch *ds, int port,
PORT_MIRROR_SNIFFER, false);
}
static void ksz9477_phy_setup(struct ksz_device *dev, int port,
struct phy_device *phy)
{
/* Only apply to port with PHY. */
if (port >= dev->phy_port_cnt)
return;
/* The MAC actually cannot run in 1000 half-duplex mode. */
phy_remove_link_mode(phy,
ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
/* PHY does not support gigabit. */
if (!(dev->features & GBIT_SUPPORT))
phy_remove_link_mode(phy,
ETHTOOL_LINK_MODE_1000baseT_Full_BIT);
}
static bool ksz9477_get_gbit(struct ksz_device *dev, u8 data)
{
bool gbit;
@ -1605,7 +1588,6 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
.get_port_addr = ksz9477_get_port_addr,
.cfg_port_member = ksz9477_cfg_port_member,
.flush_dyn_mac_table = ksz9477_flush_dyn_mac_table,
.phy_setup = ksz9477_phy_setup,
.port_setup = ksz9477_port_setup,
.r_mib_cnt = ksz9477_r_mib_cnt,
.r_mib_pkt = ksz9477_r_mib_pkt,
@ -1619,7 +1601,29 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
int ksz9477_switch_register(struct ksz_device *dev)
{
return ksz_switch_register(dev, &ksz9477_dev_ops);
int ret, i;
struct phy_device *phydev;
ret = ksz_switch_register(dev, &ksz9477_dev_ops);
if (ret)
return ret;
for (i = 0; i < dev->phy_port_cnt; ++i) {
if (!dsa_is_user_port(dev->ds, i))
continue;
phydev = dsa_to_port(dev->ds, i)->slave->phydev;
/* The MAC actually cannot run in 1000 half-duplex mode. */
phy_remove_link_mode(phydev,
ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
/* PHY does not support gigabit. */
if (!(dev->features & GBIT_SUPPORT))
phy_remove_link_mode(phydev,
ETHTOOL_LINK_MODE_1000baseT_Full_BIT);
}
return ret;
}
EXPORT_SYMBOL(ksz9477_switch_register);

2
drivers/net/dsa/microchip/ksz_common.c
View File

@ -366,8 +366,6 @@ int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy)
/* setup slave port */
dev->dev_ops->port_setup(dev, port, false);
if (dev->dev_ops->phy_setup)
dev->dev_ops->phy_setup(dev, port, phy);
/* port_stp_state_set() will be called after to enable the port so
* there is no need to do anything.

2
drivers/net/dsa/microchip/ksz_common.h
View File

@ -120,8 +120,6 @@ struct ksz_dev_ops {
u32 (*get_port_addr)(int port, int offset);
void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
void (*phy_setup)(struct ksz_device *dev, int port,
struct phy_device *phy);
void (*port_cleanup)(struct ksz_device *dev, int port);
void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);