linux-kernel - Re: 2.6.19-rc6-mm1: drivers/net/chelsio/: unused code

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Message-ID: <20070220133132.63f3e75e@localhost.localdomain>
Date:	Tue, 20 Feb 2007 13:31:32 -0800
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Jeff Garzik <jeff@...zik.org>,
	netdev@...r.kernel.org
Subject: Re: 2.6.19-rc6-mm1: drivers/net/chelsio/: unused code

On Tue, 20 Feb 2007 01:02:14 +0100
Adrian Bunk <bunk@...sta.de> wrote:

> On Tue, Nov 28, 2006 at 11:47:19PM -0800, Andrew Morton wrote:
> > On Wed, 29 Nov 2006 08:36:09 +0100
> > Adrian Bunk <bunk@...sta.de> wrote:
> > 
> > > On Mon, Nov 27, 2006 at 10:24:55AM -0800, Stephen Hemminger wrote:
> > > > On Fri, 24 Nov 2006 01:17:31 +0100
> > > > Adrian Bunk <bunk@...sta.de> wrote:
> > > > 
> > > > > On Thu, Nov 23, 2006 at 02:17:03AM -0800, Andrew Morton wrote:
> > > > > >...
> > > > > > Changes since 2.6.19-rc5-mm2:
> > > > > >...
> > > > > > +chelsio-22-driver.patch
> > > > > >...
> > > > > >  netdev updates
> > > > > 
> > > > > It is suspicious that the following newly added code is completely unused:
> > > > >   drivers/net/chelsio/ixf1010.o
> > > > >     t1_ixf1010_ops
> > > > >   drivers/net/chelsio/mac.o
> > > > >     t1_chelsio_mac_ops
> > > > >   drivers/net/chelsio/vsc8244.o
> > > > >     t1_vsc8244_ops
> > > > > 
> > > > > cu
> > > > > Adrian
> > > > > 
> > > > 
> > > > All that is gone in later version. I reposted new patches
> > > > after -mm2 was done.
> > > 
> > > It seems these patches didn't make it into 2.6.19-rc6-mm2 ?
> > 
> > I dropped that patch and picked up Francois's tree instead.
> 
> These structs are still both present and unused as of 2.6.20-mm1.

Please use your eyes, not your tool. Those functions are called in 2.6.20

static struct cmac *ixf1010_mac_create(adapter_t *adapter, int index)
{
...
	mac->ops = &ixf1010_ops;

static struct cmac *mac_create(adapter_t *adapter, int index)
{
...

	mac->ops = &chelsio_mac_ops;

mac_create gets called by 

int __devinit t1_init_sw_modules(adapter_t *adapter,
				 const struct board_info *bi)
{

	for_each_port(adapter, i) {
		u8 hw_addr[6];
		struct cmac *mac;
		int phy_addr = bi->mdio_phybaseaddr + i;

		adapter->port[i].phy = bi->gphy->create(adapter, phy_addr,
							bi->mdio_ops);


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