If we use try_module_get(driver->owner) at the right place (and
module_put as well, of course), the check for (driver->use_count > 0)
can't ever return true. So get rid of it, and add the proper module
locking calls.

 ds.c |   22 +++++++---------------
 1 files changed, 7 insertions(+), 15 deletions(-)