[PATCH V2] irq: enable all irqs unconditionally in irq_resume

From: Laxman Dewangan
Date: Tue Aug 13 2013 - 09:39:11 EST

When system enters into suspend, it disable all irqs in single
function call. This disables EARLY_RESUME irqs also along with
normal irqs.

The EARLY_RESUME irqs get enabled in sys_core_ops->resume and
non-EARLY_RESUME irqs get enabled in normal system resume path.

When suspend_noirq failed or suspend is aborted for any reason,
the EARLY_RESUME irqs do not get enabled as sys_core_ops->resume()
call did not happen. It only enables the non-EARLY_RESUME irqs in normal
disable for remaining life of system.

Enable all irqs unconditionally in normal irq_resume() regardless of
EARLY_RESUME irqs have been already enabled or not.

Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx>
Acked-by-and-tested-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Creating this patch based on disucssion on patch
[PATCH] irq: enable suspended EARLY_RESUME irqs forcefully if not resumed

Making simple change as susggested by Thomas.

kernel/irq/pm.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c
index cb228bf..abcd6ca 100644
--- a/kernel/irq/pm.c
+++ b/kernel/irq/pm.c
@@ -50,7 +50,7 @@ static void resume_irqs(bool want_early)
bool is_early = desc->action &&
desc->action->flags & IRQF_EARLY_RESUME;

- if (is_early != want_early)
+ if (!is_early && want_early)

raw_spin_lock_irqsave(&desc->lock, flags);

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