[SRU] [Unstable/OEM-5.13/OEM-5.14] [PATCH 0/1] Fix sluggish r8169 by disaling ASPM L1.2

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1942830

[Impact]
Realtek r8169 has abysmal network speed.

[Fix]
Disable ASPM L1.2 because the device takes a long time to exit from
L1.2.

[Test]
Use `iperf` to test network speed.
When ASPM L1.2 gets disabled, TX and RX and reach ~700Mbps and ~900Mbps
respectively.

[Where problems could occur]
Disabling ASPM L1.2 can slightly increase power consumption. The CPU
package C-State seems to be unaffected so the increase is rather minor.

Kai-Heng Feng (1):
  UBUNTU: SAUCE: r8169: Disable ASPM L1.2

 drivers/net/ethernet/realtek/r8169_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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2.32.0