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SubjectRe: [PATCH net-next v2 0/4] net: phy: EEE fixes
On Tue, Feb 21, 2023 at 06:03:30AM +0100, Oleksij Rempel wrote:
> changes v2:
> - restore previous ethtool set logic for the case where advertisements
> are not provided by user space.

I don't think the _kernel_ should be doing this - this introduces a
different behaviour to the kernel. As I already said, setting the
default advertisement in the case of ethtool -s is done by userspace
not by the kernel.

In fact, the kernel explicitly rejects an attempt to have autoneg
enabled with a zero advertising mask:

linkmode_copy(advertising, cmd->link_modes.advertising);
linkmode_and(advertising, advertising, phydev->supported);
if (autoneg == AUTONEG_ENABLE && linkmode_empty(advertising))
return -EINVAL;

and I think we should have a uniform behaviour with the same API,
rather than different behaviours, as that becomes quite messy.

RMK's Patch system:
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