Most of this function is protected by the sound_loader_lock.
We can push down the BKL to this call out err = file->f_op->open(inode,file);

In order to build the sound core without the BKL, we
will need to push the lock_kernel() call into the ~20
device drivers that register their file operations.
Signed-off-by: NJohn Kacur <jkacur@redhat.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>