staging: comedi: wake up async waiters when become non-busy
Wake up all waiters on the comedi subdevice's async wait queue whenever
the subdevice is marked "non-busy". This happens when an asynchronous
command is cancelled or when a command is terminated and all data has
been read or written. Note: use `wake_up_interruptible_all()` as we
only use interruptible waits.
Remove the call to `wake_up_interruptible()` from `do_cancel_ioctl()` as
it will call `wake_up_interruptible_all()` indirectly via `do_cancel()`
and `do_become_nonbusy()`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed