diff mbox series

[v2] net: phy: micrel: Fix detection of ksz87xx switch

Message ID 20210730225750.98849-1-steveb@workware.net.au
State New
Headers show
Series [v2] net: phy: micrel: Fix detection of ksz87xx switch | expand

Commit Message

Steve Bennett July 30, 2021, 10:57 p.m. UTC 
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: 8b95599c55ed24b36cf4 ("net: phy: micrel: Discern KSZ8051 and KSZ8795 PHYs")
Signed-off-by: Steve Bennett <steveb@workware.net.au>
---
 drivers/net/phy/micrel.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Comments

patchwork-bot+netdevbpf@kernel.org Aug. 2, 2021, 2:10 p.m. UTC | #1 
Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Sat, 31 Jul 2021 08:57:50 +1000 you wrote:
> 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.

> 

> [...]


Here is the summary with links:
  - [v2] net: phy: micrel: Fix detection of ksz87xx switch
    https://git.kernel.org/netdev/net/c/a5e63c7d38d5

You are awesome, thank you!
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diff mbox series

Patch

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index 4d53886f7d51..53bdd673ae56 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -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,