[PATCH 3/3] staging: dgnc: improve the coding style in unlocking part of dgnc_tty_write()

[Dan Carpenter]

On Tue, Apr 07, 2015 at 11:17:48AM +0300, Dan Carpenter wrote:
> This patch changes the lock ordering (behavior change) and it's not
> described in the changelog.  Please figure out which way is the correct
> ordering and resend.

Actually the original ordering was obviously correct.  You can't take
a mutex if you are holding a spinlock.  So it always has to be:

mutex_lock();
spin_lock();

spin_unlock();
mutext_unlock();

regards,
dan carpenter