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generic: 6.6: net: ethernet: mediatek: Allow gaps in MAC allocation

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Some devices with MediaTek SoCs don't use the first but only the second
MAC in the chip. Especially with MT7981 which got a built-in 1GE PHY
connected to the second MAC this is quite common.
Make sure to reset and enable PSE also in those cases by skipping gaps
using 'continue' instead of aborting the loop using 'break'.

Fixes: 75081235b8 ("generic: 6.6: (re-)add support multiple PPE to mtk_eth_soc")
Reported-by: Daniel Suchy <danny@danysek.cz>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2024-07-01 20:37:58 +01:00
parent 2bf2ee7be8
commit 8ef4d78582
1 changed files with 33 additions and 0 deletions
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33
target/linux/generic/pending-6.6/734-net-ethernet-mediatek-Allow-gaps-in-MAC-allocation.patch Normal file
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@ -0,0 +1,33 @@
From 379ae584cea112db60f4ada79c7e5ba4f3364a64 Mon Sep 17 00:00:00 2001
X-Patchwork-Submitter: Daniel Golle <daniel@makrotopia.org>
X-Patchwork-Id: 13718593
X-Patchwork-Delegate: kuba@kernel.org
List-Id: <netdev.vger.kernel.org>
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 1 Jul 2024 19:26:28 +0100
Subject: [PATCH] net: ethernet: mediatek: Allow gaps in MAC allocation
Some devices with MediaTek SoCs don't use the first but only the second
MAC in the chip. Especially with MT7981 which got a built-in 1GE PHY
connected to the second MAC this is quite common.
Make sure to reset and enable PSE also in those cases by skipping gaps
using 'continue' instead of aborting the loop using 'break'.
Fixes: dee4dd10c79a ("net: ethernet: mtk_eth_soc: ppe: add support for multiple PPEs")
Suggested-by: Elad Yifee <eladwf@gmail.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -3431,7 +3431,7 @@ static int mtk_open(struct net_device *d
for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i])
- break;
+ continue;
target_mac = netdev_priv(eth->netdev[i]);
if (!soc->offload_version) {