From 0662292aec0528363df037ad7c66bf9949c7ce46 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 26 Aug 2015 10:23:26 +0200 Subject: [PATCH] ALSA: usb-audio: Handle normal and auto-suspend equally In theory, the device may get suspended even at runtime PM suspend. Currently we don't save the mixer state for autopm, and it may bring inconsistency. This patch removes the special handling for autosuspend. Signed-off-by: Takashi Iwai --- sound/usb/card.c | 30 ++++++++++-------------------- 1 file changed, 10 insertions(+), 20 deletions(-) diff --git a/sound/usb/card.c b/sound/usb/card.c index 73c5833e7657..18f56646ce86 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -689,30 +689,20 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) if (chip == (void *)-1L) return 0; - if (!PMSG_IS_AUTO(message)) { + chip->autosuspended = !!PMSG_IS_AUTO(message); + if (!chip->autosuspended) snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); - if (!chip->num_suspended_intf++) { - list_for_each_entry(as, &chip->pcm_list, list) { - snd_pcm_suspend_all(as->pcm); - as->substream[0].need_setup_ep = - as->substream[1].need_setup_ep = true; - } - list_for_each(p, &chip->midi_list) { - snd_usbmidi_suspend(p); - } + if (!chip->num_suspended_intf++) { + list_for_each_entry(as, &chip->pcm_list, list) { + snd_pcm_suspend_all(as->pcm); + as->substream[0].need_setup_ep = + as->substream[1].need_setup_ep = true; } - } else { - /* - * otherwise we keep the rest of the system in the dark - * to keep this transparent - */ - if (!chip->num_suspended_intf++) - chip->autosuspended = 1; - } - - if (chip->num_suspended_intf == 1) + list_for_each(p, &chip->midi_list) + snd_usbmidi_suspend(p); list_for_each_entry(mixer, &chip->mixer_list, list) snd_usb_mixer_suspend(mixer); + } return 0; }