APPLIED [OEM-5.6] Re: [SRU] [F/G/Unstable/OEM-5.6] [PATCH 0/1] Fix system reboot when disconnecting WiFi

[Timo Aaltonen]

On 14.10.2020 6.35, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1899726
> 
> [Impact]
> Hardware triggrs reboot when disconnecting WiFi connection.
> 
> [Fix]
> There's a DMA bug in Intel WiFi 9000 needs to be limits to 6 RX queue
> max.
> 
> [Test]
> With the patch applied, a 1000 times of connect/disconnect loop doesn't
> bring the system down.
> 
> [Regression Potential]
> Not that I can think of. Hypothetically reducing RX queue rings will
> reduce the RX speed, but the wireless transfter is a lot slower then DMA
> operation, so we won't see any difference.
> 
> Mordechay Goodstein (1):
>    iwlwifi: msix: limit max RX queues for 9000 family
> 
>   drivers/net/wireless/intel/iwlwifi/iwl-trans.h  | 1 +
>   drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 6 +++++-
>   2 files changed, 6 insertions(+), 1 deletion(-)
> 

applied to oem-5.6, thanks

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