[SRU] [I/J/Unstable/OEM-5.14] [PATCH 0/1] Workaround Realtek 8821CE freeze issue

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1927808

[Impact]
Systems equipped with Realtek 8821CE randomly freeze.

[Fix]
8821CE seems to have trouble leaving ASPM L1, so do it manually to
prevent it from dragging the entire system down.

[Test]
After the patch is applied, there's no more freezing when system is
under stress test, idle, or surfing the web.

[Wheres problems could occur]
This approach will slightly increase power usage, so it's restricted to
8821CE on Intel based platform.

Kai-Heng Feng (1):
  rtw88: Disable PCIe ASPM while doing NAPI poll on 8821CE

 drivers/net/wireless/realtek/rtw88/pci.c | 61 ++++++++----------------
 drivers/net/wireless/realtek/rtw88/pci.h |  2 +
 2 files changed, 21 insertions(+), 42 deletions(-)

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2.33.1