diff mbox

[net-next,v6,1/4] net: dsa: mv88e6xxx: Don't forbid MDIO I/Os for PHY addr >= num_of_ports

Message ID 7665c54a8da0d4338d5935ab272952ea6547d815.1485288602.git-series.gregory.clement@free-electrons.com
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Gregory CLEMENT Jan. 24, 2017, 8:10 p.m. UTC
From: Romain Perier <romain.perier@free-electrons.com>

Some Marvell ethernet switches have internal ethernet transceivers with
hardcoded phy addresses. These addresses can be greater than the number
of ports or its value might be different than the associated port number.
This is for example the case for MV88E6341 that has 6 ports and internal
Port 1 to Port4 PHYs mapped at SMI addresses from 0x11 to 0x14.

This commits fixes the issue by removing the condition in MDIO callbacks.

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 6 ------
 1 file changed, 6 deletions(-)

Comments

Gregory CLEMENT Jan. 24, 2017, 8:31 p.m. UTC | #1
Hi,
 
 On mar., janv. 24 2017, Gregory CLEMENT <gregory.clement@free-electrons.com> wrote:

> From: Romain Perier <romain.perier@free-electrons.com>
>
> Some Marvell ethernet switches have internal ethernet transceivers with
> hardcoded phy addresses. These addresses can be greater than the number
> of ports or its value might be different than the associated port number.
> This is for example the case for MV88E6341 that has 6 ports and internal
> Port 1 to Port4 PHYs mapped at SMI addresses from 0x11 to 0x14.
>
> This commits fixes the issue by removing the condition in MDIO callbacks.
>
> Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
This flag is missing:
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>

Actually I added during an interactive rebase, but I had to abort it
and it was lost.

Gregory


> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
> ---
>  drivers/net/dsa/mv88e6xxx/chip.c | 6 ------
>  1 file changed, 6 deletions(-)
>
> diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
> index c7e08e13bb54..7d942f8a42a7 100644
> --- a/drivers/net/dsa/mv88e6xxx/chip.c
> +++ b/drivers/net/dsa/mv88e6xxx/chip.c
> @@ -2882,9 +2882,6 @@ static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg)
>  	u16 val;
>  	int err;
>  
> -	if (phy >= mv88e6xxx_num_ports(chip))
> -		return 0xffff;
> -
>  	mutex_lock(&chip->reg_lock);
>  	err = mv88e6xxx_phy_read(chip, phy, reg, &val);
>  	mutex_unlock(&chip->reg_lock);
> @@ -2897,9 +2894,6 @@ static int mv88e6xxx_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
>  	struct mv88e6xxx_chip *chip = bus->priv;
>  	int err;
>  
> -	if (phy >= mv88e6xxx_num_ports(chip))
> -		return 0xffff;
> -
>  	mutex_lock(&chip->reg_lock);
>  	err = mv88e6xxx_phy_write(chip, phy, reg, val);
>  	mutex_unlock(&chip->reg_lock);
> -- 
> git-series 0.9.1
diff mbox

Patch

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index c7e08e13bb54..7d942f8a42a7 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2882,9 +2882,6 @@  static int mv88e6xxx_mdio_read(struct mii_bus *bus, int phy, int reg)
 	u16 val;
 	int err;
 
-	if (phy >= mv88e6xxx_num_ports(chip))
-		return 0xffff;
-
 	mutex_lock(&chip->reg_lock);
 	err = mv88e6xxx_phy_read(chip, phy, reg, &val);
 	mutex_unlock(&chip->reg_lock);
@@ -2897,9 +2894,6 @@  static int mv88e6xxx_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
 	struct mv88e6xxx_chip *chip = bus->priv;
 	int err;
 
-	if (phy >= mv88e6xxx_num_ports(chip))
-		return 0xffff;
-
 	mutex_lock(&chip->reg_lock);
 	err = mv88e6xxx_phy_write(chip, phy, reg, val);
 	mutex_unlock(&chip->reg_lock);