r8169: Preserve other Device Control bits when setting NOSNOOP_EN
Previously, when we turned on the "Enable No Snoop Bit," we cleared all
the other Device Control bits, including error reporting enables,
Max_Payload_Size, Max_Read_Request_Size, etc. This patch preserves
all the other bits.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 4104968..a7cc560 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -5385,8 +5385,8 @@
if (tp->mac_version == RTL_GIGA_MAC_VER_13 ||
tp->mac_version == RTL_GIGA_MAC_VER_16)
- pcie_capability_write_word(pdev, PCI_EXP_DEVCTL,
- PCI_EXP_DEVCTL_NOSNOOP_EN);
+ pcie_capability_set_word(pdev, PCI_EXP_DEVCTL,
+ PCI_EXP_DEVCTL_NOSNOOP_EN);
RTL_W8(Cfg9346, Cfg9346_Unlock);