linux-kernel - Re: [PATCH RFCv2 0/6] net: phy: Ethernet PHY powerdown optimization

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Date:	Thu, 5 Dec 2013 13:27:34 +0530
From:	Mugunthan V N <mugunthanvnm@...com>
To:	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
CC:	David Miller <davem@...emloft.net>,
	Florian Fainelli <f.fainelli@...il.com>,
	<netdev@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFCv2 0/6] net: phy: Ethernet PHY powerdown optimization

On Wednesday 04 December 2013 09:14 PM, Sebastian Hesselbarth wrote:
> This is v2 of an RFC sent earlier [1] to reduce power consumption of network
> PHYs with link that are either unused or the corresponding netdev is down.
>
> In contrast to RFCv1, this now integrates phy_suspend/phy_resume transparent
> to the netdev drivers. Also, phy_suspend now only suspends the PHY if WOL is
> disabled. Moreover, the phy state machine calls phy_suspend on entering
> HALTED state.
>
> Again, a branch with RFCv2 applied to v3.13-rc2 can also be found at
> https://github.com/shesselba/linux-dove.git topic/ethphy-power-rfc-v2
>
> [1] http://lwn.net/Articles/574426/
>
> Sebastian Hesselbarth (6):
>   net: mv643xx_eth: properly start/stop phy device
>   net: phy: marvell: provide genphy suspend/resume
>   net: phy: provide phy_resume/phy_suspend helpers
>   net: phy: resume/suspend PHYs on attach/detach
>   net: phy: suspend unused PHYs on mdio_bus in late_initcall
>   net: phy: suspend phydev when going to HALTED
>
>  drivers/net/ethernet/marvell/mv643xx_eth.c |    4 +++-
>  drivers/net/phy/marvell.c                  |   22 ++++++++++++++++++++++
>  drivers/net/phy/mdio_bus.c                 |   25 +++++++++++++++++++++++++
>  drivers/net/phy/phy.c                      |    6 +++++-
>  drivers/net/phy/phy_device.c               |   27 +++++++++++++++++++++++++++
>  include/linux/phy.h                        |    2 ++
>  6 files changed, 84 insertions(+), 2 deletions(-)
>
> ---
> Cc: David Miller <davem@...emloft.net>
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Cc: Mugunthan V N <mugunthanvnm@...com>
> Cc: netdev@...r.kernel.org
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
Apart form Sergei's comment the patch series looks good to me.

Acked-by: Mugunthan V N <mugunthanvnm@...com>

Regards
Mugunthan V N
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