On 11/13/2013 07:08 AM, Tomi Valkeinen wrote:

Hi Linus,

The following changes since commit 272b98c6455f00884f0350f775c5342358ebb73f:

   Linux 3.12-rc1 (2013-09-16 16:17:51 -0400)

are available in the git repository at:

   git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git tags/fbdev-3.13

for you to fetch changes up to 3a41c5dbe8bc396a7fb16ca8739e945bb003342e:

   fb: reorder the lock sequence to fix potential dead lock (2013-11-11 15:52:59 +0200)

----------------------------------------------------------------
fbdev changes for 3.13

Nothing particularly stands out in this pull request. The biggest part of the
changes are cleanups.

Maybe one fix to mention is the "fb: reorder the lock sequence to fix potential
dead lock" which hopefully fixes the fb locking issues reported by multiple
persons.

...<snip>

Gu Zheng (1):
       fb: reorder the lock sequence to fix potential dead lock

John,

The above patch should fix the deadlock you found in fbcon_generic_blank().
Please re-test 3.13-rc1 when released [or Tomi's for-next branch now].

Regards,
Peter Hurley