Re: [PATCH net v2] ncsi: Revert NCSI link loss/gain commit

From: Simon Horman
Date: Fri Nov 10 2023 - 12:43:02 EST


On Thu, Nov 09, 2023 at 12:51:37PM -0800, Johnathan Mantey wrote:
> The NCSI commit
> ncsi: Propagate carrier gain/loss events to the NCSI controller
> introduced unwanted behavior.
>
> The intent for the commit was to be able to detect carrier loss/gain
> for just the NIC connected to the BMC. The unwanted effect is a
> carrier loss for auxiliary paths also causes the BMC to lose
> carrier. The BMC never regains carrier despite the secondary NIC
> regaining a link.
>
> This change, when merged, needs to be backported to stable kernels.
> 5.4-stable, 5.10-stable, 5.15-stable, 6.1-stable, 6.5-stable
>
> Fixes: 3780bb29311e ncsi: Propagate carrier gain/loss events to the
> CC: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Johnathan Mantey <johnathanx.mantey@xxxxxxxxx>

Hi Johnathan,

thanks for your patch.
Some minor feedback from my side.

1. The correct format for the tag above is:

Fixes: 3780bb29311e ("ncsi: Propagate carrier gain/loss events to the NCSI controller")

2. I think it is usual to format the subject and commit messages for
revert commits a bit like this:

Subject: [PATCH net vX] Revert "ncsi: Propagate carrier gain/loss events to the NCSI controller"

This reverts commit 3780bb29311eccb7a1c9641032a112eed237f7e3.

The cited commit introduced unwanted behavior.

The intent for the commit was to be able to detect carrier loss/gain
for just the NIC connected to the BMC. The unwanted effect is a
carrier loss for auxiliary paths also causes the BMC to lose
carrier. The BMC never regains carrier despite the secondary NIC
regaining a link.

...