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Re: [PATCH v2 1/2] net: phy: Fix PHY AN done state machine for interrupt driven PHYs

From Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 1/2] net: phy: Fix PHY AN done state machine for interrupt driven PHYs
Date 2017-03-23 11:00 +0100
Message-ID <to7Hb-q5-5@gated-at.bofh.it> (permalink)
References <tnMjo-1pY-33@gated-at.bofh.it> <tnMjo-1pY-31@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hello!

On 3/22/2017 2:02 PM, Roger Quadros wrote:

> he ethernet link on an interrupt driven PHY was not coming up if the

    s/he/The/?

> ethernet cable was plugged before the ethernet interface was brought up.

    Also, my spell checker trips on "ethernet", perhaps should be capitalized?

> The PHY state machine seems to be stuck from RUNNING to AN state
> with no new interrupts from the PHY. So it doesn't know when the
> PHY Auto-negotiation has been completed and doesn't transition to RUNNING
> state with ANEG done thus netif_carrier_on() is never called.
>
> NOTE: genphy_config_aneg() will not restart PHY Auto-negotiation of
> advertisement parameters didn't change.
>
> Fix this by scheduling the PHY state machine in phy_start_aneg().
>
> Fixes: 3c293f4e08b5 ("net: phy: Trigger state machine on state change and not polling.")
> Cc: stable <stable@vger.kernel.org> # v4.9+
> Signed-off-by: Roger Quadros <rogerq@ti.com>
[...]

MBR, Sergei

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Thread

[PATCH v2 1/2] net: phy: Fix PHY AN done state machine for interrupt driven PHYs Roger Quadros <rogerq@ti.com> - 2017-03-22 12:10 +0100
  Re: [PATCH v2 1/2] net: phy: Fix PHY AN done state machine for  interrupt driven PHYs Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2017-03-23 11:00 +0100
    Re: [PATCH v2 1/2] net: phy: Fix PHY AN done state machine for  interrupt driven PHYs Roger Quadros <rogerq@ti.com> - 2017-03-27 14:00 +0200
  [PATCH v3 1/2] net: phy: Fix PHY AN done state machine for interrupt  driven PHYs Roger Quadros <rogerq@ti.com> - 2017-03-27 14:10 +0200

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