Commit 9ff2c132 authored May 14, 2015 by Stephen Hemminger Committed by Greg Kroah-Hartman May 24, 2015

uio: don't free irq that was not requested



UIO base driver should only free_irq that it has requested.
UIO supports drivers without interrupts (irq == 0) or custom handlers.

This fixes warnings like:

WARNING: CPU: 1 PID: 5478 at kernel/irq/manage.c:1244 __free_irq+0xa9/0x1e0()
Trying to free already-free IRQ 0

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 5b20a028

drivers/uio/uio.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -879,7 +879,8 @@ void uio_unregister_device(struct uio_info *info)

		uio_dev_del_attributes(idev);

		free_irq(idev->info->irq, idev);
		if (info->irq && info->irq != UIO_IRQ_CUSTOM)
		free_irq(info->irq, idev);

		device_destroy(&uio_class, MKDEV(uio_major, idev->minor));