ALSA: hda - Fix link power unbalance at device removal
snd_hdac_link_power() has to be called after unregistering the codec device. Otherwise the device might be already runtime-suspended, thus the refcount goes under zero, triggering a warning like: WARNING: CPU: 7 PID: 2014 at sound/hda/hdac_i915.c:63 snd_hdac_display_power+0x106/0x120 [snd_hda_core]() CPU: 7 PID: 2014 Comm: modprobe Not tainted 4.1.0-rc7-test+ #1 Call Trace: [<ffffffff81697fe3>] dump_stack+0x4c/0x6e [<ffffffff810696da>] warn_slowpath_common+0x8a/0xc0 [<ffffffff810697ca>] warn_slowpath_null+0x1a/0x20 [<ffffffffa02dd526>] snd_hdac_display_power+0x106/0x120 [snd_hda_core] [<ffffffffa030b422>] azx_intel_link_power+0x12/0x20 [snd_hda_intel] [<ffffffffa037139f>] azx_link_power+0x1f/0x30 [snd_hda_codec] [<ffffffffa02d89fe>] snd_hdac_link_power+0x2e/0x40 [snd_hda_core] [<ffffffffa0368524>] snd_hda_codec_dev_free+0x34/0x50 [snd_hda_codec] [<ffffffffa0252061>] __snd_device_free+0x51/0xa0 [snd] ..... Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
df203a4e46
commit
a457782a1c
@ -886,8 +886,8 @@ static int snd_hda_codec_dev_free(struct snd_device *device)
|
||||
struct hda_codec *codec = device->device_data;
|
||||
|
||||
codec->in_freeing = 1;
|
||||
snd_hdac_link_power(&codec->core, false);
|
||||
snd_hdac_device_unregister(&codec->core);
|
||||
snd_hdac_link_power(&codec->core, false);
|
||||
put_device(hda_codec_dev(codec));
|
||||
return 0;
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user