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From: Andrew Morton <>
To: "Rafael J. Wysocki" <>
Cc: LKML <>,
	Tigran Aivazian <>,
	Pavel Machek <>, Maxim <>
Subject: Re: [PATCH] Fix microcode-related suspend problem
Date: Sat, 31 Mar 2007 13:35:32 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Sat, 31 Mar 2007 22:04:15 +0200 "Rafael J. Wysocki" <> wrote:

> This patch appeard on LMKL six days ago and there have not been any negative
> comments since then, so I think I can try to make it official.
> ---
> From: Rafael J. Wysocki <>
> Fix the regression resulting from the recent change of suspend code ordering
> that causes systems based on Intel x86 CPUs using the microcode driver to
> hang during the resume.
> The problem occurs since the microcode driver uses request_firmware() in its
> CPU hotplug notifier, which is called after tasks has been frozen and hangs.
> It can be fixed by telling the microcode driver to use the microcode stored in
> memory during the resume instead of trying to load it from disk.


arch/i386/kernel/microcode.c: In function 'microcode_init_cpu':
arch/i386/kernel/microcode.c:628: error: 'suspend_cpu_hotplug' undeclared (first use in this function)
arch/i386/kernel/microcode.c:628: error: (Each undeclared identifier is reported only once
arch/i386/kernel/microcode.c:628: error: for each function it appears in.)
arch/i386/kernel/microcode.c: In function 'mc_sysdev_add':
arch/i386/kernel/microcode.c:717: error: 'suspend_cpu_hotplug' undeclared (first use in this function)
arch/i386/kernel/microcode.c: In function 'mc_sysdev_remove':
arch/i386/kernel/microcode.c:745: error: 'suspend_cpu_hotplug' undeclared (first use in this function)

Given this, and the overall intrusiveness of the change, I'd worry about
trying to get this into 2.6.21.

  reply	other threads:[~2007-03-31 20:36 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-31 20:04 Rafael J. Wysocki
2007-03-31 20:35 ` Andrew Morton [this message]
2007-03-31 20:52   ` Rafael J. Wysocki
2007-03-31 21:23   ` Adrian Bunk
2007-03-31 23:26     ` Rafael J. Wysocki

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