[PATCH 1/1] net: dsa: yt921x: Fix external port detection

[PATCH 1/1] net: dsa: yt921x: Fix external port detection

[Chukun Pan]

The YT921x switch has two MAC ports: 8 and 9. Currently, the driver
only allows port 8 as an external port, while port 9 is not working:

yt921x mdio-bus:1d: Wrong mode 23 on port 9
yt921x mdio-bus:1d: Failed to config port 9: -22

Update the external port detection logic to enable the external PHY
connected to port 9.

Fixes: 186623f4aa72 ("net: dsa: yt921x: Add support for Motorcomm YT921x")
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
---
 drivers/net/dsa/yt921x.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/yt921x.h b/drivers/net/dsa/yt921x.h
index 555046526669..5f3b99e189c4 100644
--- a/drivers/net/dsa/yt921x.h
+++ b/drivers/net/dsa/yt921x.h
@@ -854,7 +854,7 @@ enum yt921x_fdb_entry_status {
 #define YT921X_PORT_NUM			11
 
 #define yt921x_port_is_internal(port) ((port) < 8)
-#define yt921x_port_is_external(port) (8 <= (port) && (port) < 9)
+#define yt921x_port_is_external(port) ((port) == 8 || (port) == 9)
 
 struct yt921x_mib {
 	u64 rx_broadcast;
-- 
2.34.1

Re: [PATCH 1/1] net: dsa: yt921x: Fix external port detection

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Fri, 10 Jul 2026 18:00:00 +0800 you wrote:
> The YT921x switch has two MAC ports: 8 and 9. Currently, the driver
> only allows port 8 as an external port, while port 9 is not working:
> 
> yt921x mdio-bus:1d: Wrong mode 23 on port 9
> yt921x mdio-bus:1d: Failed to config port 9: -22
> 
> Update the external port detection logic to enable the external PHY
> connected to port 9.
> 
> [...]

Here is the summary with links:
  - [1/1] net: dsa: yt921x: Fix external port detection
    https://git.kernel.org/netdev/net-next/c/f2596ce59b15

You are awesome, thank you!
-- 
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