netdev - Re: [PATCH net 1/3] net: bcmgenet: test MPD

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Message-ID: <d445afad-7c73-7552-7347-63fc3b984483@gmail.com>
Date:   Thu, 16 Jul 2020 17:36:57 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Doug Berger <opendmb@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net 1/3] net: bcmgenet: test MPD_EN when resuming



On 7/16/2020 4:38 PM, Doug Berger wrote:
> When the GENET driver resumes from deep sleep the UMAC_CMD
> register may not be accessible and therefore should not be
> accessed from bcmgenet_wol_power_up_cfg() if the GENET has
> been reset.
> 
> This commit adds a check of the MPD_EN flag when Wake on
> Magic Packet is enabled. A clear flag indicates that the
> GENET hardware must have been reset so the remainder of the
> hardware programming is bypassed.
> 
> Fixes: 1a1d5106c1e3 ("net: bcmgenet: move clk_wol management to bcmgenet_wol")
> Signed-off-by: Doug Berger <opendmb@...il.com>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian