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

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

On 12/21/21 11:37 PM, Kai-Heng Feng wrote:
> 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(-)
> 

-- 
-----------
Tim Gardner
Canonical, Inc