linux-kernel - [PATCH] irq: generic-chip: pass an irq in chip to suspend/resume

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Message-Id: <1331939402-12110-1-git-send-email-ccross@android.com>
Date:	Fri, 16 Mar 2012 16:10:02 -0700
From:	Colin Cross <ccross@...roid.com>
To:	linux-kernel@...r.kernel.org
Cc:	Colin Cross <ccross@...roid.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] irq: generic-chip: pass an irq in chip to suspend/resume

irq_gc_suspend and irq_gc_resume pass the irq_data of irq_base
to the ops, but if irq_mask bit 0 is not set, that irq_data is
not part of the generic chip, and there is no way to get to the
generic chip data from there.  Instead, pass the irq_data of
gc->irq_base + gc->irq_cnt - 1, which is guaranteed to be part
of this generic chip.

Change-Id: Idec42ea5714aae8dad16f9994a9f96ba9b61bfb6
Signed-off-by: Colin Cross <ccross@...roid.com>
---
 kernel/irq/generic-chip.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index c89295a..40b952f 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -324,9 +324,10 @@ static int irq_gc_suspend(void)
 
 	list_for_each_entry(gc, &gc_list, list) {
 		struct irq_chip_type *ct = gc->chip_types;
+		int irq = gc->irq_base + gc->irq_cnt - 1;
 
 		if (ct->chip.irq_suspend)
-			ct->chip.irq_suspend(irq_get_irq_data(gc->irq_base));
+			ct->chip.irq_suspend(irq_get_irq_data(irq));
 	}
 	return 0;
 }
@@ -337,9 +338,10 @@ static void irq_gc_resume(void)
 
 	list_for_each_entry(gc, &gc_list, list) {
 		struct irq_chip_type *ct = gc->chip_types;
+		int irq = gc->irq_base + gc->irq_cnt - 1;
 
 		if (ct->chip.irq_resume)
-			ct->chip.irq_resume(irq_get_irq_data(gc->irq_base));
+			ct->chip.irq_resume(irq_get_irq_data(irq));
 	}
 }
 #else
-- 
1.7.7.3

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