Merge tag 'pm+acpi-4.5-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...

[cascardo/linux.git] / drivers / base / platform.c

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index d77ed0c..8dcbb26 100644 (file)
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -117,6 +117,26 @@ int platform_get_irq(struct platform_device *dev, unsigned int num)
 }
 EXPORT_SYMBOL_GPL(platform_get_irq);
 
+/**
+ * platform_irq_count - Count the number of IRQs a platform device uses
+ * @dev: platform device
+ *
+ * Return: Number of IRQs a platform device uses or EPROBE_DEFER
+ */
+int platform_irq_count(struct platform_device *dev)
+{
+       int ret, nr = 0;
+
+       while ((ret = platform_get_irq(dev, nr)) >= 0)
+               nr++;
+
+       if (ret == -EPROBE_DEFER)
+               return ret;
+
+       return nr;
+}
+EXPORT_SYMBOL_GPL(platform_irq_count);
+
 /**
  * platform_get_resource_byname - get a resource for a device by name
  * @dev: platform device