linux-kernel - [PATCH v1 2/2] Revert "irq: Enable all irqs unconditionally in irq

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Date:	Fri, 27 Jun 2014 17:04:25 -0700
From:	Derek Basehore <dbasehore@...omium.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux-pm@...r.kernel.org, Laxman Dewangan <ldewangan@...dia.com>,
	Ian Campbell <ian.campbell@...rix.com>,
	xen-devel@...ts.xenproject.org,
	Derek Basehore <dbasehore@...omium.org>
Subject: [PATCH v1 2/2] Revert "irq: Enable all irqs unconditionally in irq_resume"

This reverts the fix to IRQF_EARLY_RESUME irqs staying disabled after a suspend
failure. It incorrectly stated that Xen is the only platform that uses this
feature. Some rtc drivers such as rtc-as3722.c use the feature and can have its
irq permanently enabled with the change. The driver does disable/enable the irq
for the rtc alarm, so it needs a different fix which is in "genirq: Fix error
path for resuming irqs"

We should also keep correct enable/disable parity for irqs.

This reverts commit ac01810c9d2814238f08a227062e66a35a0e1ea2.

Signed-off-by: Derek Basehore <dbasehore@...omium.org>
---
 kernel/irq/pm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/pm.c b/kernel/irq/pm.c
index b07dc9c..a5eaf1f 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)
 			continue;

 		raw_spin_lock_irqsave(&desc->lock, flags);
-- 
2.0.0.526.g5318336

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