On Sun, Dec 26, 2010 at 1:45 PM, Rafael J. Wysocki <rjw@xxxxxxx> wrote:
> (It still is not a race, though.)
Thread 1
=======
suspend_handler_of_a_random_device()
{
return failure;
}
Thread 2
=======
suspend_handler_of_our_mmc_host_controller()
{
invoke our sdio suspend handler and power down the card (directly);
return success;
}
If thread 2 wins => everything is cool
If thread 1 wins => our driver will not be able to resume
The race begins after mac80211 invokes our driver's power off handler,
which is using pm_runtime_put_sync().
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