From: Liu Jian liujian56@huawei.com
[ 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@huawei.com Reviewed-by: Russell King (Oracle) rmk+kernel@armlinux.org.uk Link: https://lore.kernel.org/r/20221117111356.161547-1-liujian56@huawei.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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);