Re: [PATCH] net/macb: Only adjust tx_clk on link change

From: David Miller
Date: Thu Mar 12 2015 - 23:04:51 EST

From: Jaeden Amero <jaeden.amero@xxxxxx>
Date: Thu, 12 Mar 2015 18:07:54 -0500

> The PHY state machine (in drivers/net/phy/phy.c) will unconditionally
> call phydev->adjust_link (macb_handle_link_change) when polling in the
> PHY_CHANGELINK state. As currently written, macb always ends up
> requesting a new tx_clk frequency in macb_handle_link_change. It is a
> waste of time to request a new tx_clk frequency if the link state hasn't
> changed, as the tx_clk will already be configured properly.
> Let's only request a new tx_clk clock frequency when necessary.
> Signed-off-by: Jaeden Amero <jaeden.amero@xxxxxx>

Applied to net-next, thanks.
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