Subject: [PATCH] ARM: hw_breakpoint: Enable debug powerdown only if system supports 'has_ossr'

From: [email-masked] (Kevin Hilman)
Date: Thu, 14 Mar 2013 10:38:43 -0700

Lokesh Vutla <[email-masked]> writes:

> Commit {9a6eb31 ARM: hw_breakpoint: Debug powerdown support for self-hosted
> debug} introduces debug powerdown support for self-hosted debug.
> While merging the patch 'has_ossr' check was removed which
> was needed for hardwares which doesn't support self-hosted debug.
> Pandaboard (A9) is one such hardware and Dietmar's orginial
> patch did mention this issue.
> Without that check on Panda with CPUIDLE enabled, a flood of
> below messages thrown.
>
> [ 3.597930] hw-breakpoint: CPU 0 failed to disable vector catch
> [ 3.597991] hw-breakpoint: CPU 1 failed to disable vector catch
>
> So restore that check back to avoid the mentioned issue.
>
> Cc: Dietmar Eggemann <[email-masked]>
> Cc: Will Deacon <[email-masked]>
> Reported-by: Santosh Shilimkar <[email-masked]>
> Acked-by: Santosh Shilimkar <[email-masked]>
> Signed-off-by: Lokesh Vutla <[email-masked]>

I just noticed this on my Panda boards with CPUidle enabled, and
$SUBJECT patch fixes it.

FWIW,

Tested-by: Kevin Hilman <[email-masked]>

I agree that this should get queued for v3.9-rc.

Kevin