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>
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 65bf067..3257d42 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -879,7 +879,8 @@
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));