r8169: re-enable MSI on RTL8168c

[ Upstream commit f13bc68131b0c0d67a77fb43444e109828a983bf ]

The original change fixed an issue on RTL8168b by mimicking the vendor
driver behavior to disable MSI on chip versions before RTL8168d.
This however now caused an issue on a system with RTL8168c, see [0].
Therefore leave MSI disabled on RTL8168b, but re-enable it on RTL8168c.

[0] https://bugzilla.redhat.com/show_bug.cgi?id=1792839

Fixes: 003bd5b4a7b4 ("r8169: don't use MSI before RTL8168d")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 6ea43e48d5f97845c4b638caad9696e4840cb5af..361ae9e5a2b3745d47d49691eb65c1183629dff6 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -7249,7 +7249,7 @@ static int rtl_alloc_irq(struct rtl8169_private *tp)
                RTL_W8(tp, Config2, RTL_R8(tp, Config2) & ~MSIEnable);
                RTL_W8(tp, Cfg9346, Cfg9346_Lock);
                /* fall through */
-       case RTL_GIGA_MAC_VER_07 ... RTL_GIGA_MAC_VER_24:
+       case RTL_GIGA_MAC_VER_07 ... RTL_GIGA_MAC_VER_17:
                flags = PCI_IRQ_LEGACY;
                break;
        default: