linux-kernel - Re: [PATCH v2] net: macb: Specify PHY PM management done by MAC

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Message-ID: <527fe1c9-fcaf-af0f-1b5b-aee46afe56f9@gmail.com>
Date:   Wed, 19 Oct 2022 16:37:03 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Sergiu Moga <sergiu.moga@...rochip.com>,
        nicolas.ferre@...rochip.com, claudiu.beznea@...rochip.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, linux@...linux.org.uk,
        tudor.ambarus@...rochip.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: macb: Specify PHY PM management done by MAC



On 10/19/2022 5:09 AM, Sergiu Moga wrote:
> The `macb_resume`/`macb_suspend` methods already call the
> `phylink_start`/`phylink_stop` methods during their execution so
> explicitly say that the PM of the PHY is done by MAC by using the
> `mac_managed_pm` flag of the `struct phylink_config`.
> 
> This also fixes the warning message issued during resume:
> WARNING: CPU: 0 PID: 237 at drivers/net/phy/phy_device.c:323 mdio_bus_phy_resume+0x144/0x148
> 
> Depends-on: 96de900ae78e ("net: phylink: add mac_managed_pm in phylink_config structure")
> Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state")
> Signed-off-by: Sergiu Moga <sergiu.moga@...rochip.com>

Reviewed-by: Florian Fainelli <f.fainelli@...il.com>

Makes me realize we need to do the same in DSA, I will cook a patch soon.
-- 
Florian