[SRU trusty] [pull request] (upstream) xgene: BUG: soft lockup - CPU#0 stuck for 23s! [halt:2059] on poweroff

[Craig Magina]

On Tue, Jan 6, 2015 at 12:48 PM, Andy Whitcroft <apw at canonical.com> wrote:
> On Fri, Dec 19, 2014 at 12:52:20PM -0500, Craig Magina wrote:
>> This contains two upstream commits backported from utopic.
>>
>> BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1404335
>>
>>
>> The following changes since commit 892d23edba04d9a97e9843e85be961e52aa2d604:
>>
>>   UBUNTU: Ubuntu-3.13.0-44.73 (2014-12-15 16:01:34 -0800)
>>
>> are available in the git repository at:
>>
>>   git://kernel.ubuntu.com/cmagina/trusty-xgene.git lp1404335
>>
>> for you to fetch changes up to 00032765b9a95eb12852c924979b307c27a2ec42:
>>
>>   arm64: Fix deadlock scenario with smp_send_stop() (2014-12-19 12:39:45 -0500)
>>
>> ----------------------------------------------------------------
>> Arun KS (2):
>>       arm64: Fix machine_shutdown() definition
>>       arm64: Fix deadlock scenario with smp_send_stop()
>>
>>  arch/arm64/kernel/process.c | 45 +++++++++++++++++++++++++++++++++++++--------
>>  1 file changed, 37 insertions(+), 8 deletions(-)
>>
>> Thank you,
>
>   commit 00032765b9a95eb12852c924979b307c27a2ec42
>   Author: Arun KS <arunks.linux at gmail.com>
>   Date:   Wed May 7 02:41:23 2014 +0100
>
>     arm64: Fix deadlock scenario with smp_send_stop()
>
> This first one, seems to have needed backporting because we have not
> applied the following to remove fiq support:
>
>   commit f864b61ee49bbf3faf9a10b9770c719536328d01
>   Author: Nicolas Pitre <nicolas.pitre at linaro.org>
>   Date:   Wed Jan 29 18:00:45 2014 +0000
>
>     arm64: FIQs are unused
>
> I would think we either want that one, or you want to leave the
> following line in in your backport:
>
> -       local_fiq_disable();
>
> The other patch looks fine.
>
> -apw

Thanks for taking a look. I rebased that patch and tested the result,
it still fixes the issue, so here is a new pull request with that one
change you suggested.

The following changes since commit 892d23edba04d9a97e9843e85be961e52aa2d604:

  UBUNTU: Ubuntu-3.13.0-44.73 (2014-12-15 16:01:34 -0800)

are available in the git repository at:

  git://kernel.ubuntu.com/cmagina/trusty-xgene.git lp1404335

for you to fetch changes up to 7433e57af3002208851e0ef86458ad03797f01da:

  arm64: Fix deadlock scenario with smp_send_stop() (2015-01-07 14:32:52 -0500)

----------------------------------------------------------------
Arun KS (2):
      arm64: Fix machine_shutdown() definition
      arm64: Fix deadlock scenario with smp_send_stop()

 arch/arm64/kernel/process.c | 44 +++++++++++++++++++++++++++++++++++++-------
 1 file changed, 37 insertions(+), 7 deletions(-)

Thank you,
-- 
Craig Magina