• Wu Fengguang's avatar
    ALSA: hda - create hda_codec.control_mutex for kcontrol->private_value · 5a9e02e9
    Wu Fengguang authored
    Fix the following lockdep warning by not reusing the hda_codec.spdif_mutex.
    
        ALSA sound/pci/hda/hda_codec.c:882: hda_codec_cleanup_stream: NID=0x2
    
        =======================================================
        [ INFO: possible circular locking dependency detected ]
        2.6.28-next-20090102 #33
        -------------------------------------------------------
        mplayer/3151 is trying to acquire lock:
         (&pcm->open_mutex){--..}, at: [<ffffffffa004ced3>] snd_pcm_release+0x43/0xd0 [snd_pcm]
    
        but task is already holding lock:
         (&mm->mmap_sem){----}, at: [<ffffffff810c0252>] sys_munmap+0x42/0x80
    
        which lock already depends on the new lock.
    Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    5a9e02e9
hda_codec.c 92.8 KB