4.18-stable review patch. If anyone has any objections, please let me know.
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From: Jian-Hong Pan jian-hong@endlessm.com
[ Upstream commit 7bb05b85bc2d1a1b647b91424b2ed4a18e6ecd81 ]
Found the ethernet network on ASUS X441UAR doesn't come back on resume from suspend when using MSI-X. The chip is RTL8106e - version 39.
[ 21.848357] libphy: r8169: probed [ 21.848473] r8169 0000:02:00.0 eth0: RTL8106e, 0c:9d:92:32:67:b4, XID 44900000, IRQ 127 [ 22.518860] r8169 0000:02:00.0 enp2s0: renamed from eth0 [ 29.458041] Generic PHY r8169-200:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=r8169-200:00, irq=IGNORE) [ 63.227398] r8169 0000:02:00.0 enp2s0: Link is Up - 100Mbps/Full - flow control off [ 124.514648] Generic PHY r8169-200:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=r8169-200:00, irq=IGNORE)
Here is the ethernet controller in detail:
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 07) Subsystem: ASUSTeK Computer Inc. RTL810xE PCI Express Fast Ethernet controller [1043:200f] Flags: bus master, fast devsel, latency 0, IRQ 16 I/O ports at e000 [size=256] Memory at ef100000 (64-bit, non-prefetchable) [size=4K] Memory at e0000000 (64-bit, prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: r8169 Kernel modules: r8169
Falling back to MSI fixes the issue.
Fixes: 6c6aa15fdea5 ("r8169: improve interrupt handling") Signed-off-by: Jian-Hong Pan jian-hong@endlessm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/realtek/r8169.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -7539,17 +7539,20 @@ static int rtl_alloc_irq(struct rtl8169_ { unsigned int flags;
- if (tp->mac_version <= RTL_GIGA_MAC_VER_06) { + switch (tp->mac_version) { + case RTL_GIGA_MAC_VER_01 ... RTL_GIGA_MAC_VER_06: RTL_W8(tp, Cfg9346, Cfg9346_Unlock); RTL_W8(tp, Config2, RTL_R8(tp, Config2) & ~MSIEnable); RTL_W8(tp, Cfg9346, Cfg9346_Lock); flags = PCI_IRQ_LEGACY; - } else if (tp->mac_version == RTL_GIGA_MAC_VER_40) { + break; + case RTL_GIGA_MAC_VER_39 ... RTL_GIGA_MAC_VER_40: /* This version was reported to have issues with resume * from suspend when using MSI-X */ flags = PCI_IRQ_LEGACY | PCI_IRQ_MSI; - } else { + break; + default: flags = PCI_IRQ_ALL_TYPES; }