linux-kernel - [PATCH 03/05] irqchip: intc-irqpin: Add force comments

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Message-Id: <20130226115904.5630.11666.sendpatchset@w520>
Date:	Tue, 26 Feb 2013 20:59:04 +0900
From:	Magnus Damm <magnus.damm@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	kuninori.morimoto.gx@...esas.com, linux-sh@...r.kernel.org,
	benh@...nel.crashing.org, grant.likely@...retlab.ca,
	horms@...ge.net.au, Magnus Damm <magnus.damm@...il.com>,
	tglx@...utronix.de
Subject: [PATCH 03/05] irqchip: intc-irqpin: Add force comments

From: Magnus Damm <damm@...nsource.se>

Add comments to describe the special case for
"force" versions of enable and disable functions.

Signed-off-by: Magnus Damm <damm@...nsource.se>
---

 Thanks to Thomas Gleixner for this suggestion.

 drivers/irqchip/irq-renesas-intc-irqpin.c |    9 +++++++++
 1 file changed, 9 insertions(+)

--- 0006/drivers/irqchip/irq-renesas-intc-irqpin.c
+++ work/drivers/irqchip/irq-renesas-intc-irqpin.c	2013-02-26 19:36:33.000000000 +0900
@@ -199,6 +199,11 @@ static void intc_irqpin_irq_enable_force
 	int irq = p->irq[irqd_to_hwirq(d)].requested_irq;
 
 	intc_irqpin_irq_enable(d);
+
+	/* enable interrupt through parent interrupt controller,
+	 * assumes non-shared interrupt with 1:1 mapping
+	 * needed for busted IRQs on some SoCs like sh73a0
+	 */
 	irq_get_chip(irq)->irq_unmask(irq_get_irq_data(irq));
 }
 
@@ -207,6 +212,10 @@ static void intc_irqpin_irq_disable_forc
 	struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
 	int irq = p->irq[irqd_to_hwirq(d)].requested_irq;
 
+	/* disable interrupt through parent interrupt controller,
+	 * assumes non-shared interrupt with 1:1 mapping
+	 * needed for busted IRQs on some SoCs like sh73a0
+	 */
 	irq_get_chip(irq)->irq_mask(irq_get_irq_data(irq));
 	intc_irqpin_irq_disable(d);
 }
--
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