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ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input

Forráskód böngészése 
sound/usb/card.c registers USB suspend and resume but did not previously
kill the input URBs. This means that USB MIDI devices left open across
suspend/resume had non-functional input (output still usually worked,
but it looks like that is another issue). Before this change, we would
get ESHUTDOWN for each of the input URBs at suspend time, killing input.

Signed-off-by: Adam Goode <agoode@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Adam Goode
2014-08-05 12:44:50 -04:00
committed by Takashi Iwai
szülő 81cb6b6be5
commit f7881e5e8e
3 fájl változott, egészen pontosan 39 új sor hozzáadva és 0 régi sor törölve
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9
sound/usb/card.c
Fájl megtekintése

@@ -680,6 +680,7 @@ static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message)
struct snd_usb_audio *chip = usb_get_intfdata(intf);
struct snd_usb_stream *as;
struct usb_mixer_interface *mixer;
struct list_head *p;
if (chip == (void *)-1L)
return 0;
@@ -692,6 +693,9 @@ 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) {
snd_usbmidi_suspend(p);
}
}
} else {
/*
@@ -713,6 +717,7 @@ static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume)
{
struct snd_usb_audio *chip = usb_get_intfdata(intf);
struct usb_mixer_interface *mixer;
struct list_head *p;
int err = 0;
if (chip == (void *)-1L)
@@ -731,6 +736,10 @@ static int __usb_audio_resume(struct usb_interface *intf, bool reset_resume)
goto err_out;
}
list_for_each(p, &chip->midi_list) {
snd_usbmidi_resume(p);
}
if (!chip->autosuspended)
snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0);
chip->autosuspended = 0;