From: Bartosz Golaszewski bartosz.golaszewski@linaro.org
[ Upstream commit c4fc88ad2a765224a648db8ab35f125e120fe41b ]
Commit 49725ffc15fc ("net: stmmac: power up/down serdes in stmmac_open/release") correctly added a call to the serdes_powerdown() callback to stmmac_release() but did not remove the one from stmmac_remove() which leads to a doubled call to serdes_powerdown().
This can lead to all kinds of problems: in the case of the qcom ethqos driver, it caused an unbalanced regulator disable splat.
Fixes: 49725ffc15fc ("net: stmmac: power up/down serdes in stmmac_open/release") Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Reviewed-by: Jiri Pirko jiri@nvidia.com Acked-by: Junxiao Chang junxiao.chang@intel.com Reviewed-by: Andrew Halaney ahalaney@redhat.com Tested-by: Andrew Halaney ahalaney@redhat.com Link: https://lore.kernel.org/r/20230621135537.376649-1-brgl@bgdev.pl Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 30ce073055785..a07bcb2f5d2e2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -7388,12 +7388,6 @@ int stmmac_dvr_remove(struct device *dev) netif_carrier_off(ndev); unregister_netdev(ndev);
- /* Serdes power down needs to happen after VLAN filter - * is deleted that is triggered by unregister_netdev(). - */ - if (priv->plat->serdes_powerdown) - priv->plat->serdes_powerdown(ndev, priv->plat->bsp_priv); - #ifdef CONFIG_DEBUG_FS stmmac_exit_fs(ndev); #endif