linux-kernel - [tip:irq/core] genirq: Add irq_get_trigger

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Message-ID: <tip-1f6236bfd7c38d5f9f7648fae7215e65274b9e63@git.kernel.org>
Date:	Tue, 25 Jun 2013 02:52:17 -0700
From:	tip-bot for Javier Martinez Canillas <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, jason@...edaemon.net,
	grant.likely@...aro.org, hpa@...or.com, mingo@...nel.org,
	javier.martinez@...labora.co.uk, benh@...nel.crashing.org,
	ralf@...ux-mips.org, linux@....linux.org.uk, andrew@...n.ch,
	tglx@...utronix.de, sameo@...ux.intel.com, linus.walleij@...aro.org
Subject: [tip:irq/core] genirq: Add irq_get_trigger_type()
  to get IRQ flags

Commit-ID:  1f6236bfd7c38d5f9f7648fae7215e65274b9e63
Gitweb:     http://git.kernel.org/tip/1f6236bfd7c38d5f9f7648fae7215e65274b9e63
Author:     Javier Martinez Canillas <javier.martinez@...labora.co.uk>
AuthorDate: Fri, 14 Jun 2013 18:40:43 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 25 Jun 2013 11:48:24 +0200

genirq: Add irq_get_trigger_type() to get IRQ flags

Drivers that want to get the trigger edge/level type flags for a given
interrupt have to call irq_get_irq_data(irq) to get the struct
irq_data and then irqd_get_trigger_type(irq_data) to obtain the IRQ
flags.

This is not only error prone but also unnecessary exposes the struct
irq_data to callers.

It's better to have an irq_get_trigger_type() function to obtain the
edge/level flags for an IRQ.

Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Acked-by: Grant Likely <grant.likely@...aro.org>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Samuel Ortiz <sameo@...ux.intel.com>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Russell King <linux@....linux.org.uk>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-mips@...ux-mips.org
Link: http://lkml.kernel.org/r/1371228049-27080-2-git-send-email-javier.martinez@collabora.co.uk
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/irq.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 298a9b9..f04d3ba 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -584,6 +584,12 @@ static inline struct msi_desc *irq_data_get_msi(struct irq_data *d)
 	return d->msi_desc;
 }
 
+static inline u32 irq_get_trigger_type(unsigned int irq)
+{
+	struct irq_data *d = irq_get_irq_data(irq);
+	return d ? irqd_get_trigger_type(d) : 0;
+}
+
 int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
 		struct module *owner);
 
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