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37 lines
1.2 KiB
Diff
37 lines
1.2 KiB
Diff
From 3665853921092bb68aa0929efb3a94ecdfc96782 Mon Sep 17 00:00:00 2001
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From: Thierry Reding <thierry.reding@gmail.com>
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Date: Thu, 19 Dec 2013 09:30:59 -0300
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Subject: [PATCH 188/203] of/irq: Rework of_irq_count()
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The of_irq_to_resource() helper that is used to implement of_irq_count()
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tries to resolve interrupts and in fact creates a mapping for resolved
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interrupts. That's pretty heavy lifting for something that claims to
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just return the number of interrupts requested by a given device node.
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Instead, use the more lightweight of_irq_map_one(), which, despite the
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name, doesn't create an actual mapping. Perhaps a better name would be
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of_irq_translate_one().
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Signed-off-by: Thierry Reding <treding@nvidia.com>
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Acked-by: Rob Herring <rob.herring@calxeda.com>
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[grant.likely: fixup s/of_irq_map_one/of_irq_parse_one/]
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Signed-off-by: Grant Likely <grant.likely@linaro.org>
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---
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drivers/of/irq.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/drivers/of/irq.c
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+++ b/drivers/of/irq.c
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@@ -379,9 +379,10 @@ EXPORT_SYMBOL_GPL(of_irq_to_resource);
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*/
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int of_irq_count(struct device_node *dev)
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{
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+ struct of_phandle_args irq;
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int nr = 0;
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- while (of_irq_to_resource(dev, nr, NULL))
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+ while (of_irq_parse_one(dev, nr, &irq) == 0)
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nr++;
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return nr;
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