This patch avoids issues while calling into copy from/to user while holding the
lock by only taking the lock when it is absolutely required.
The only commands which require the snoop lock are: *Set Filter *Clear Filter
*Clear Queue
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
33ab349037