netdev - Re: [PATCH v5 0/2] Adding new TI Common Platform ethernet SWitch driver

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Date:	Mon, 19 Mar 2012 21:06:36 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	mugunthanvnm@...com, netdev@...r.kernel.org
Subject: Re: [PATCH v5 0/2] Adding new TI Common Platform ethernet SWitch
 driver

On Mon, 2012-03-19 at 18:06 -0400, David Miller wrote:
> From: Mugunthan V N <mugunthanvnm@...com>
> Date: Mon, 19 Mar 2012 11:47:52 +0530
> 
> > The following series contains driver implementation for TI Common Platform
> > ethernet SWitch (CPSW) driver.
> > 
> > CPSW is found in following SoC.
> > * AM335X - http://www.ti.com/litv/pdf/spruh73c
> > * DM814X - http://www.ti.com/litv/pdf/sprugz8
> > 
> > CPSW:
> > The three port switch gigabit ethernet subsystem provides ethernet packet
> > communication and can be configured as an ethernet switch.  It
> > supports 10/100/1000 Mbps. It provides the gigabit media independent
> > interface (G/MII), reduced gigabit media independent interface (RGMII),
> > reduced media independent interface (RMII), the management data input
> > output (MDIO) for physical layer device (PHY) management.
> 
> All applied.

It appears this driver doesnt have a ndo_change_mtu method, so I suspect
some bad things could happen.

I wonder if we should WARN is netdev_ops->ndo_change_mtu is NULL

For an ethernet driver, using eth_change_mtu seems the right thing.



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