diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-12-07 12:15:33 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-12-07 12:15:33 +0100 |
| commit | 222e82bef4bd520a31d48c31ab24e49dd46daa46 (patch) | |
| tree | b6e73cad8e0b3a1c3e1acc537789e97aadaefa92 /sound/usb/midi.c | |
| parent | 38ca9c927c7d3db61f57e3d3a9334958c3af6e9a (diff) | |
| parent | 18a2f371f5edf41810f6469cb9be39931ef9deb9 (diff) | |
Merge branch 'linus' into sched/core
Pick up the autogroups fix and other fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'sound/usb/midi.c')
| -rw-r--r-- | sound/usb/midi.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sound/usb/midi.c b/sound/usb/midi.c index c83f6143c0e..eeefbce3873 100644 --- a/sound/usb/midi.c +++ b/sound/usb/midi.c @@ -148,6 +148,7 @@ struct snd_usb_midi_out_endpoint { struct snd_usb_midi_out_endpoint* ep; struct snd_rawmidi_substream *substream; int active; + bool autopm_reference; uint8_t cable; /* cable number << 4 */ uint8_t state; #define STATE_UNKNOWN 0 @@ -1076,7 +1077,8 @@ static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream) return -ENXIO; } err = usb_autopm_get_interface(umidi->iface); - if (err < 0) + port->autopm_reference = err >= 0; + if (err < 0 && err != -EACCES) return -EIO; substream->runtime->private_data = port; port->state = STATE_UNKNOWN; @@ -1087,9 +1089,11 @@ static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream) static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream) { struct snd_usb_midi* umidi = substream->rmidi->private_data; + struct usbmidi_out_port *port = substream->runtime->private_data; substream_open(substream, 0); - usb_autopm_put_interface(umidi->iface); + if (port->autopm_reference) + usb_autopm_put_interface(umidi->iface); return 0; } |