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 <[email protected]> --- a/drivers/uio/uio.c 2015-05-14 09:04:54.677283462 -0700 +++ b/drivers/uio/uio.c 2015-05-14 09:09:28.170547587 -0700 @@ -879,7 +879,8 @@ void uio_unregister_device(struct uio_in 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)); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
