[PATCH] net: mdiobus: add mdio_c45_bad_oui_list for mdiobus_prevent_c45_scan

[PATCH] net: mdiobus: add mdio_c45_bad_oui_list for mdiobus_prevent_c45_scan

[Zhao Dongdong]

From: Zhao Dongdong <zhaodongdong@kylinos.cn>

Added the mdio_c45_bad_oui_list to facilitate adding more PHYs that
do not support C45 scanning.

Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
---
 drivers/net/phy/mdio_bus_provider.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/mdio_bus_provider.c b/drivers/net/phy/mdio_bus_provider.c
index ce3a607a40cb..928586602eff 100644
--- a/drivers/net/phy/mdio_bus_provider.c
+++ b/drivers/net/phy/mdio_bus_provider.c
@@ -522,15 +522,21 @@ static int mdiobus_scan_bus_c45(struct mii_bus *bus)
  * devices have been found, see if any of them are bad for C45, and if we
  * should skip the C45 scan.
  */
+static const u32 mdio_c45_bad_oui_list[] = {
+	MICREL_OUI,
+};
 static bool mdiobus_prevent_c45_scan(struct mii_bus *bus)
 {
 	struct phy_device *phydev;
 
 	mdiobus_for_each_phy(bus, phydev) {
 		u32 oui = phydev->phy_id >> 10;
+		int i;
 
-		if (oui == MICREL_OUI)
-			return true;
+		for (i = 0; i < ARRAY_SIZE(mdio_c45_bad_oui_list); i++) {
+			if (oui == mdio_c45_bad_oui_list[i])
+				return true;
+		}
 	}
 
 	return false;
-- 
2.25.1

Re: [PATCH] net: mdiobus: add mdio_c45_bad_oui_list for mdiobus_prevent_c45_scan

[Andrew Lunn]

On Tue, May 12, 2026 at 04:25:21PM +0800, Zhao Dongdong wrote:
> From: Zhao Dongdong <zhaodongdong@kylinos.cn>
> 
> Added the mdio_c45_bad_oui_list to facilitate adding more PHYs that
> do not support C45 scanning.
> 
> Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>

Please make this is patch series which adds the PHY you have which is
also broken.

    Andrew

---
pw-bot: cr

Re: [PATCH] net: mdiobus: add mdio_c45_bad_oui_list for

[Zhao Dongdong]

On Tue, 12 May 2026 14:26:48 +0200, Andrew Lunn <andrew@lunn.ch> wrote:
>
> On Tue, May 12, 2026 at 04:25:21PM +0800, Zhao Dongdong wrote:
> > From: Zhao Dongdong <zhaodongdong@kylinos.cn>
> > 
> > Added the mdio_c45_bad_oui_list to facilitate adding more PHYs that
> > do not support C45 scanning.
> > 
> > Signed-off-by: Zhao Dongdong <zhaodongdong@kylinos.cn>
>
> Please make this is patch series which adds the PHY you have which is
> also broken.
>
>     Andrew
>
> ---
> pw-bot: cr

Thanks for the review.
The PHY driver hasn't been upstreamed yet. We can bundle it with this patch and submit them together once it's ready.


-- 
Regards,
    Zhao Dongdong