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Takashi Iwai 6ab1dea094 ALSA: usb-audio: Fix missing autopm for MIDI input

commit f5f165418c upstream.

The commit [88a8516a: ALSA: usbaudio: implement USB autosuspend] added
the support of autopm for USB MIDI output, but it didn't take the MIDI
input into account.

This patch adds the following for fixing the autopm:
- Manage the URB start at the first MIDI input stream open, instead of
  the time of instance creation
- Move autopm code to the common substream_open()
- Make snd_usbmidi_input_start/_stop() more robust and add the running
  state check

Reviewd-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-01-11 09:03:37 -08:00

aoa

Revert wrong fixes for common misspellings

2011-04-26 23:31:11 -07:00

arm

Merge branch 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6 into for-2.6.39

2011-04-03 19:28:29 +09:00

atmel

ALSA: atmel - update author email for ABDAC, AC97C and AT73C213

2011-06-28 16:56:07 +02:00

core

ALSA: Fix card refcount unbalance