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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-22 23:27:17 +0900
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-22 23:27:17 +0900
commit69c1f05379a34786da96d0fdedc111cdcdecdf6f (patch)
tree74a0cde11fbc619c227af89e0757036ab20323d0 /drivers/of/irq.c
parent007dfe5ad6d039df784b44285bae89654eab3258 (diff)
parent4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff)
downloadlinux-69c1f05379a34786da96d0fdedc111cdcdecdf6f.tar.bz2
Merge 3.15-rc6 into staging-next.
This resolves the conflicts in the files: drivers/iio/adc/Kconfig drivers/staging/rtl8723au/os_dep/usb_ops_linux.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/of/irq.c')
-rw-r--r--drivers/of/irq.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 9bcf2cf19357..5aeb89411350 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -364,7 +364,7 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
memset(r, 0, sizeof(*r));
/*
- * Get optional "interrupts-names" property to add a name
+ * Get optional "interrupt-names" property to add a name
* to the resource.
*/
of_property_read_string_index(dev, "interrupt-names", index,
@@ -380,6 +380,32 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
EXPORT_SYMBOL_GPL(of_irq_to_resource);
/**
+ * of_irq_get - Decode a node's IRQ and return it as a Linux irq number
+ * @dev: pointer to device tree node
+ * @index: zero-based index of the irq
+ *
+ * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+ * is not yet created.
+ *
+ */
+int of_irq_get(struct device_node *dev, int index)
+{
+ int rc;
+ struct of_phandle_args oirq;
+ struct irq_domain *domain;
+
+ rc = of_irq_parse_one(dev, index, &oirq);
+ if (rc)
+ return rc;
+
+ domain = irq_find_host(oirq.np);
+ if (!domain)
+ return -EPROBE_DEFER;
+
+ return irq_create_of_mapping(&oirq);
+}
+
+/**
* of_irq_count - Count the number of IRQs a node uses
* @dev: pointer to device tree node
*/