leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

net: phy: micrel: Fix detection of ksz87xx switch

Browse Source 
The logic for discerning between KSZ8051 and KSZ87XX PHYs is incorrect
such that the that KSZ87XX switch is not identified correctly.

ksz8051_ksz8795_match_phy_device() uses the parameter ksz_phy_id
to discriminate whether it was called from ksz8051_match_phy_device()
or from ksz8795_match_phy_device() but since PHY_ID_KSZ87XX is the
same value as PHY_ID_KSZ8051, this doesn't work.

Instead use a bool to discriminate the caller.

Without this patch, the KSZ8795 switch port identifies as:

ksz8795-switch spi3.1 ade1 (uninitialized): PHY [dsa-0.1:03] driver [Generic PHY]

With the patch, it identifies correctly:

ksz8795-switch spi3.1 ade1 (uninitialized): PHY [dsa-0.1:03] driver [Micrel KSZ87XX Switch]

Fixes: 8b95599c55 ("net: phy: micrel: Discern KSZ8051 and KSZ8795 PHYs")
Signed-off-by: Steve Bennett <steveb@workware.net.au>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Bennett 2021-07-31 08:57:50 +10:00 committed by David S. Miller
parent cebb5103f0
commit a5e63c7d38
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/net/phy/micrel.c
View File

@ -401,11 +401,11 @@ static int ksz8041_config_aneg(struct phy_device *phydev)
}
static int ksz8051_ksz8795_match_phy_device(struct phy_device *phydev,
const u32 ksz_phy_id)
const bool ksz_8051)
{
int ret;
if ((phydev->phy_id & MICREL_PHY_ID_MASK) != ksz_phy_id)
if ((phydev->phy_id & MICREL_PHY_ID_MASK) != PHY_ID_KSZ8051)
return 0;
ret = phy_read(phydev, MII_BMSR);
@ -418,7 +418,7 @@ static int ksz8051_ksz8795_match_phy_device(struct phy_device *phydev,
* the switch does not.
*/
ret &= BMSR_ERCAP;
if (ksz_phy_id == PHY_ID_KSZ8051)
if (ksz_8051)
return ret;
else
return !ret;
@ -426,7 +426,7 @@ static int ksz8051_ksz8795_match_phy_device(struct phy_device *phydev,
static int ksz8051_match_phy_device(struct phy_device *phydev)
{
return ksz8051_ksz8795_match_phy_device(phydev, PHY_ID_KSZ8051);
return ksz8051_ksz8795_match_phy_device(phydev, true);
}
static int ksz8081_config_init(struct phy_device *phydev)
@ -535,7 +535,7 @@ static int ksz8061_config_init(struct phy_device *phydev)
static int ksz8795_match_phy_device(struct phy_device *phydev)
{
return ksz8051_ksz8795_match_phy_device(phydev, PHY_ID_KSZ87XX);
return ksz8051_ksz8795_match_phy_device(phydev, false);
}
static int ksz9021_load_values_from_of(struct phy_device *phydev,