From 54744510fa9c056d388a019c4518a93956bc8db5 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Wed, 16 Mar 2022 22:31:00 +0100 Subject: [PATCH] r8169: improve driver unload and system shutdown behavior on DASH-enabled systems There's a number of systems supporting DASH remote management. Driver unload and system shutdown can result in the PHY suspending, thus making DASH unusable. Improve this by handling DASH being enabled very similar to WoL being enabled. Tested-by: Yanko Kaneti Signed-off-by: Heiner Kallweit Link: https://lore.kernel.org/r/1de3b176-c09c-1654-6f00-9785f7a4f954@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/realtek/r8169_main.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 67014eb..33f5c56 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -1397,8 +1397,11 @@ static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts) rtl_lock_config_regs(tp); device_set_wakeup_enable(tp_to_dev(tp), wolopts); - rtl_set_d3_pll_down(tp, !wolopts); - tp->dev->wol_enabled = wolopts ? 1 : 0; + + if (tp->dash_type == RTL_DASH_NONE) { + rtl_set_d3_pll_down(tp, !wolopts); + tp->dev->wol_enabled = wolopts ? 1 : 0; + } } static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) @@ -4938,6 +4941,9 @@ static int rtl8169_runtime_idle(struct device *device) { struct rtl8169_private *tp = dev_get_drvdata(device); + if (tp->dash_type != RTL_DASH_NONE) + return -EBUSY; + if (!netif_running(tp->dev) || !netif_carrier_ok(tp->dev)) pm_schedule_suspend(device, 10000); @@ -4978,7 +4984,8 @@ static void rtl_shutdown(struct pci_dev *pdev) /* Restore original MAC address */ rtl_rar_set(tp, tp->dev->perm_addr); - if (system_state == SYSTEM_POWER_OFF) { + if (system_state == SYSTEM_POWER_OFF && + tp->dash_type == RTL_DASH_NONE) { if (tp->saved_wolopts) rtl_wol_shutdown_quirk(tp); @@ -5449,7 +5456,12 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* configure chip for default features */ rtl8169_set_features(dev, dev->features); - rtl_set_d3_pll_down(tp, true); + if (tp->dash_type == RTL_DASH_NONE) { + rtl_set_d3_pll_down(tp, true); + } else { + rtl_set_d3_pll_down(tp, false); + dev->wol_enabled = 1; + } jumbo_max = rtl_jumbo_max(tp); if (jumbo_max) -- 2.7.4