From: Liu Jian <liujian56@xxxxxxxxxx>
[ Upstream commit f70074140524c59a0935947b06dd6cb6e1ea642d ]
If mtk_start_dma() fails, invoke phylink_disconnect_phy() to perform
cleanup. phylink_disconnect_phy() contains the put_device action. If
phylink_disconnect_phy is not performed, the Kref of netdev will leak.
Fixes: b8fc9f30821e ("net: ethernet: mediatek: Add basic PHYLINK support")
Signed-off-by: Liu Jian <liujian56@xxxxxxxxxx>
Reviewed-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221117111356.161547-1-liujian56@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index c7aff89141e1..217dc67c48fa 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2299,7 +2299,10 @@ static int mtk_open(struct net_device *dev)
int err = mtk_start_dma(eth);
if (err)
+ if (err) {
+ phylink_disconnect_phy(mac->phylink);
return err;
+ }
mtk_gdm_config(eth, MTK_GDMA_TO_PDMA);
--
2.35.1
