Lets "usb auto suspend" work for devices that set their
usb_driver::supports_autosuspend to 1.
Has no effect for other devices.
Signed-off-by: Karsten Wiese <fzu@xxxxxxxxxxxxxxxxxxxxx>
---
sound/usb/usbmidi.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 6c616c7..842486f 100644
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -860,11 +860,14 @@ static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
}
substream->runtime->private_data = port;
port->state = STATE_UNKNOWN;
+ usb_autopm_get_interface(umidi->iface);
return 0;
}
static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
{
+ struct snd_usb_midi* umidi = substream->rmidi->private_data;
+ usb_autopm_put_interface(umidi->iface);
return 0;
}
--
1.5.3.3
-------------------------------------------------------
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