hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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 <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-08-26 10:23:26 +02:00
parent a6da499b76
commit 0662292aec
1 changed files with 10 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sound/usb/card.c
View File

@ -689,7 +689,8 @@ 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) {
@ -697,22 +698,11 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
as->substream[0].need_setup_ep =
as->substream[1].need_setup_ep = true;
}
list_for_each(p, &chip->midi_list) {
list_for_each(p, &chip->midi_list)
snd_usbmidi_suspend(p);
}
}
} 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_entry(mixer, &chip->mixer_list, list)
snd_usb_mixer_suspend(mixer);
}
return 0;
}