Add a function to tear down the work which was done in platform_get_irq()
for when the device driver is done with the irq.
For ACPI companion devices the irq resource is set as disabled, as this
resource is configured from platform_get_irq()->acpi_irq_get() and requires
resetting.
Signed-off-by: John Garry <john.ga...@huawei.com>
---
drivers/base/platform.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 88aef93eb4dd..3eeda3746701 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -289,6 +289,20 @@ int platform_irq_count(struct platform_device *dev)
}
EXPORT_SYMBOL_GPL(platform_irq_count);
+void platform_put_irq(struct platform_device *dev, unsigned int num)
+{
+ unsigned int virq = platform_get_irq(dev, num);
+
+ irq_dispose_mapping(virq);
+ if (has_acpi_companion(&dev->dev)) {
+ struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ,
+ num);
+
+ if (r)
+ acpi_dev_irqresource_disabled(r, 0);
+ }
+}
+
/**
* platform_get_resource_byname - get a resource for a device by name
* @dev: platform device
--
2.26.2
