Bug#703640: src:linux: [3.8 -> 3.8.1 regression]: Resume from suspend stuck with framebuffer locking rework

[Vincent Blut <vincent.debian@free.fr>]

Package: src:linux
Version: 3.8.3-1~experimental.1
Severity: important
Tags: upstream

Hi,

As mentioned in the subject, the following commit prevents me to resume from
suspend in kernel ≥ 3.8.1: 

commit cace7c323ddde7358ab2f2390ece964c55f30330
Author: Alan Cox <alan@linux.intel.com>
Date:   Fri Jan 25 10:28:15 2013 +1000

    fb: rework locking to fix lock ordering on takeover
        
    commit 50e244cc793d511b86adea24972f3a7264cae114 upstream.
                
    Adjust the console layer to allow a take over call where the caller
    already holds the locks.  Make the fb layer lock in order.
                            
    This is partly a band aid, the fb layer is terminally confused about the
    locking rules it uses for its notifiers it seems.
                                        
    [akpm@linux-foundation.org: remove stray non-ascii char, tidy comment]
    [akpm@linux-foundation.org: export do_take_over_console()]
    [airlied: cleanup another non-ascii char]
    Signed-off-by: Alan Cox <alan@linux.intel.com>
    Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
    Cc: Stephen Rothwell <sfr@canb.auug.org.au>
    Cc: Jiri Kosina <jkosina@suse.cz>
    Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
    Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Dave Airlie <airlied@redhat.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

I didn't try to boot with this commit reverted, and looking at its size,
I fear there will be some conflict to solve before attempting to do so.

I guess it could be interesting to try 3.9-rc. to see how it
behaves (I didn't see what have been merged in this area in the last
merge window). I might try to connect through ssh to see if I get a
trace.

Cheers,
Vincent


-- System Information:
Debian Release: 7.0
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash