linux-kernel - Re: [RFC PATCH] bgmac: Fix build error seen if BCM47XX is not configured

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Message-ID: <20150415204635.GA18364@roeck-us.net>
Date:	Wed, 15 Apr 2015 13:46:35 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Rafał Miłecki <zajec5@...il.com>
Cc:	Ralf Baechle <ralf@...ux-mips.org>,
	"David S. Miller" <davem@...emloft.net>,
	Network Development <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>
Subject: Re: [RFC PATCH] bgmac: Fix build error seen if BCM47XX is not
 configured

On Wed, Apr 15, 2015 at 10:21:49PM +0200, Rafał Miłecki wrote:
> On 15 April 2015 at 22:05, Guenter Roeck <linux@...ck-us.net> wrote:
> > arm:allmodconfig fails to build as follows since ARCH_BCM_5301X
> > is configured but not BCM47XX.
> >
> > drivers/net/ethernet/broadcom/bgmac.c: In function 'bgmac_probe':
> > drivers/net/ethernet/broadcom/bgmac.c:1643:2: error:
> >                 implicit declaration of function 'bcm47xx_nvram_getenv'
> >
> > Fixes: fc300dc3733f ("bgmac: allow enabling on ARCH_BCM_5301X")
> > Cc: Rafał Miłecki <zajec5@...il.com>
> > Signed-off-by: Guenter Roeck <linux@...ck-us.net>
> > ---
> > Seen in today's upstream kernel.
> >
> > I don't like this fix too much (I think it is quite kludgy),
> > so I marked it RFC (and please don't beat the messenger ;-).
> 
> Ooh great, I totally forgot about this :|
> 
> The problem is that fc300dc (bgmac: allow enabling on ARCH_BCM_5301X)
> [0] shouldn't really be sent (by me) in the first place. This is
> because it depends on 138173d (MIPS: BCM47xx: Move NVRAM header to the
> include/linux/.) [1] which isn't in Linus's tree yet.
> 
> So there are two solutions:
> 1) Revert fc300dc, wait for 138173d and re-apply fc300dc
> 2) Wait for 138173d with this build breakage
> 
> I guess the decisions depends on
> a) time needed for David to revert fc300dc & send pull request
> vs.
> b) time needed for Ralf to send pull request
> 
> David, Ralf, what do you think about this?
> 

Since the fix is in the queue, maybe we can live with the breakage
for a few days ? Your solution is definitely _much_ better than my hack.

Guenter
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