netdev - RE: [PATCH net-next 1/3] net: phy: Create sysfs reciprocal links for attached

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Message-ID: <9235D6609DB808459E95D78E17F2E43D40A9DB14@CHN-SV-EXMX02.mchp-main.com>
Date:   Sat, 27 May 2017 00:43:16 +0000
From:   <Woojung.Huh@...rochip.com>
To:     <f.fainelli@...il.com>, <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <andrew@...n.ch>
Subject: RE: [PATCH net-next 1/3] net: phy: Create sysfs reciprocal links
 for attached_dev/phydev

Hi Florian,
 
> OK, so here is what is happening: macb_mii_init() calls macb_mii_probe()
> and so by the time we call phy_connect_direct(), we have not called
> register_netdevice() yet, netdev_register_kobject() has not been called
> either, and so sysfs_create_link() fails....
I just found same thing.
Yes, register_netdev() was not called at phy_connect_direct() time. 

> Let me think about a way to solve that, even though I am leaning towards
> ignoring the errors from sysfs_create_link() rather than fixing each and
> every Ethernet driver to make it probe its MII bus *after* calling
> register_netdevice()....
Agree.
 
> >
> > What is driver you are testing? I can check the file.
> 
> Drivers involved are the following:
> 
> drivers/net/ethernet/broadcom/bcmsysport.c,
> drivers/net/dsa/bcm_sf2.c
> drivers/net/ethernet/broadcom/genet/
> drivers/net/phy/bcm7xxx.c
Thanks for list of files.

- Woojung