Re: [PATCH] driver core: flush async calls before testing driver removal
From: Greg Kroah-Hartman
Date: Sat Dec 10 2016 - 02:40:28 EST
On Sat, Dec 10, 2016 at 02:15:19AM +0200, Vladimir Zapolskiy wrote:
> If CONFIG_DEBUG_TEST_DRIVER_REMOVE option is enabled a number of false
> positives are reported for ATA controller drivers, because ATA port
> probes are done asynchronously, and the same problem may also touch
> other asynchronously probed drivers.
> To reduce the rate of false reports on boot call async_synchronize_full()
> before attempting to remove a driver, the same is done in delete_module()
> syscall for all possible drivers and in __device_release_driver() function
> for asynchronously probed drivers.
__device_release_driver() already calls this function, why call it