From: David Miller <davem@davemloft.net>
To: alexandre.belloni@bootlin.com
Cc: andrew@lunn.ch, f.fainelli@gmail.com,
Allan.Nielsen@microsemi.com, thomas.petazzoni@bootlin.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net: phy: allow scanning busses with missing phys
Date: Wed, 25 Apr 2018 13:01:20 -0400 (EDT) [thread overview]
Message-ID: <20180425.130120.435606346755827260.davem@davemloft.net> (raw)
In-Reply-To: <20180424160904.32457-1-alexandre.belloni@bootlin.com>
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Tue, 24 Apr 2018 18:09:04 +0200
> Some MDIO busses will error out when trying to read a phy address with no
> phy present at that address. In that case, probing the bus will fail
> because __mdiobus_register() is scanning the bus for all possible phys
> addresses.
>
> In case MII_PHYSID1 returns -EIO or -ENODEV, consider there is no phy at
> this address and set the phy ID to 0xffffffff which is then properly
> handled in get_phy_device().
>
> Suggested-by: Andrew Lunn <andrew@lunn.ch>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Applied, thank you.
prev parent reply other threads:[~2018-04-25 17:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-24 16:09 [PATCH] net: phy: allow scanning busses with missing phys Alexandre Belloni
2018-04-24 16:37 ` Florian Fainelli
2018-04-24 18:01 ` Andrew Lunn
2018-04-25 1:08 ` Florian Fainelli
2018-04-24 18:09 ` Alexandre Belloni
2018-04-25 1:09 ` Florian Fainelli
2018-04-25 17:01 ` David Miller [this message]
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