linux-kernel - [PATCH] regmap: Dynamicallly allocate a regmap

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Date:	Sun, 13 May 2012 12:50:21 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	linux-kernel@...r.kernel.org
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] regmap: Dynamicallly allocate a regmap_irq range if no base is specified

This avoids drivers having to implement the logic and will make it easier
to add irq_domain support.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
 drivers/base/regmap/regmap-irq.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 0d233cc..f9724af 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -195,6 +195,10 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
 			return -EINVAL;
 	}
 
+	/* Ask for a dynamic range if none is specified */
+	if (!irq_base)
+		irq_base = -1;
+
 	irq_base = irq_alloc_descs(irq_base, 0, chip->num_irqs, 0);
 	if (irq_base < 0) {
 		dev_warn(map->dev, "Failed to allocate IRQs: %d\n",
-- 
1.7.10

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