From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <greg@kroah.com>
Subject: Re: linux-next: build failure after merge of the driver-core tree
Date: Thu, 5 Jan 2012 15:20:34 -0800
Message-ID: <20120105232034.GB15643@kroah.com>
References: <20120105172856.07fc66f37d76f16a88d22799@canb.auug.org.au>
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To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>, Borislav Petkov <borislav.petkov@amd.com>, Jan Beulich <JBeulich@suse.com>, Kay Sievers <kay.sievers@vrfy.org>
List-Id: linux-next.vger.kernel.org

On Thu, Jan 05, 2012 at 05:28:56PM +1100, Stephen Rothwell wrote:
> Hi Greg,
> 
> After merging the driver-core tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> arch/x86/kernel/microcode_core.c: In function 'microcode_init':
> arch/x86/kernel/microcode_core.c:557:2: error: implicit declaration of function 'sysdev_driver_unregister' [-Werror=implicit-function-declaration]
> arch/x86/kernel/microcode_core.c:557:28: error: 'cpu_sysdev_class' undeclared (first use in this function)
> arch/x86/kernel/microcode_core.c:557:47: error: 'mc_sysdev_driver' undeclared (first use in this function)
> 
> Caused by commit 8a25a2fd126c ("cpu: convert 'cpu' and 'machinecheck'
> sysdev_class to a regular subsystem") interacting with commit
> bd399063976c ("x86, microcode: Fix the failure path of microcode update
> driver init code") which was added to Linux' tree in v3.2-rc5,
> 
> I have applied the following merge fix patch:

Thanks, this looks good, and I'll queue it up when push these to Linus.

greg k-h