linux/sound, branch v3.4.50

ALSA: usb-audio - Fix invalid volume resolution on Logitech HD webcam c270

2013-06-13T16:44:53Z

commit 11e7064f35bb87da8f427d1aa4bbd8b7473a3993 upstream. USB audio driver spews an error message when probing Logitech HD webcam c270: ALSA mixer.c:1300 usb_audio: Warning! Unlikely big volume range (=6144), cval->res is probably wrong. ALSA mixer.c:1304 usb_audio: [5] FU [Mic Capture Volume] ch = 1, val = 1536/7680/1 Obviously the device needs a fixed volume resolution (cval->res = 384) like other Logitech devices. Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=821735 Reported-and-tested-by: Cristian Rodríguez Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: usb-audio - Apply Logitech QuickCam Pro 9000 quirk only to audio iface

2013-06-13T16:44:53Z

commit 8eafc0a161123d90617c9ca2eddfe87b382b1b89 upstream. ... instead of applying to all interfaces. Reference: http://forums.gentoo.org/viewtopic-p-6886404.html Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: usb-audio: fix Roland/Cakewalk UM-3G support

2013-06-13T16:44:52Z

commit a0c6d309c6df14655f9962f666d1da96318b0b7c upstream. Commit 927c9423dd5f2d1c0b93d5e694ab84b4a5559713 (ALSA: usb-audio: add Edirol UM-3G support) used a wrong quirk type, which would make the driver refuse to attach with the error message "MIDIStreaming interface descriptor not found". Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: HDA: Fix Oops caused by dereference NULL pointer

2013-05-19T17:54:36Z

commit 2195b063f6609e4c6268f291683902f25eaf9aa6 upstream. The interrupt handler azx_interrupt will call azx_update_rirb, which may call snd_hda_queue_unsol_event, snd_hda_queue_unsol_event will dereference chip->bus pointer. The problem is we alloc chip->bus in azx_codec_create which will be called after we enable IRQ and enable unsolicited event in azx_probe. This will cause Oops due dereference NULL pointer. I meet it, good luck:) [Rearranged the NULL check before the tracepoint and added another NULL check of bus->workq -- tiwai] Signed-off-by: Wang YanQing Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ASoC: wm8994: missing break in wm8994_aif3_hw_params()

2013-05-19T17:54:34Z

commit 4495e46fe18f198366961bb2b324a694ef8a9b44 upstream. The missing break here means that we always return early and the function is a no-op. Signed-off-by: Dan Carpenter Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

ASoC: max98088: Fix logging of hardware revision.

2013-05-08T02:51:55Z

commit 98682063549bedd6e2d2b6b7222f150c6fbce68c upstream. The hardware revision of the codec is based at 0x40. Subtract that before convering to ASCII. The same as it is done for 98095. Signed-off-by: Dylan Reid Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

ALSA: usb-audio: Fix autopm error during probing

2013-05-08T02:51:55Z

commit 60af3d037eb8c670dcce31401501d1271e7c5d95 upstream. We've got strange errors in get_ctl_value() in mixer.c during probing, e.g. on Hercules RMX2 DJ Controller: ALSA mixer.c:352 cannot get ctl value: req = 0x83, wValue = 0x201, wIndex = 0xa00, type = 4 ALSA mixer.c:352 cannot get ctl value: req = 0x83, wValue = 0x200, wIndex = 0xa00, type = 4 .... It turned out that the culprit is autopm: snd_usb_autoresume() returns -ENODEV when called during card->probing = 1. Since the call itself during card->probing = 1 is valid, let's fix the return value of snd_usb_autoresume() as success. Reported-and-tested-by: Daniel Schürmann Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: usb-audio: disable autopm for MIDI devices

2013-05-08T02:51:55Z

commit cbc200bca4b51a8e2406d4b654d978f8503d430b upstream. Commit 88a8516a2128 (ALSA: usbaudio: implement USB autosuspend) introduced autopm for all USB audio/MIDI devices. However, many MIDI devices, such as synthesizers, do not merely transmit MIDI messages but use their MIDI inputs to control other functions. With autopm, these devices would get powered down as soon as the last MIDI port device is closed on the host. Even some plain MIDI interfaces could get broken: they automatically send Active Sensing messages while powered up, but as soon as these messages cease, the receiving device would interpret this as an accidental disconnection. Commit f5f165418cab (ALSA: usb-audio: Fix missing autopm for MIDI input) introduced another regression: some devices (e.g. the Roland GAIA SH-01) are self-powered but do a reset whenever the USB interface's power state changes. To work around all this, just disable autopm for all USB MIDI devices. Reported-by: Laurens Holst Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

ALSA: snd-usb: try harder to find USB_DT_CS_ENDPOINT

2013-05-08T02:51:55Z

commit ebfc594c02148b6a85c2f178cf167a44a3c3ce10 upstream. The USB_DT_CS_ENDPOINT class-specific endpoint descriptor is usually stuffed directly after the standard USB endpoint descriptor, and this is where the driver currently expects it to be. There are, however, devices in the wild that have it the other way around in their descriptor sets, so the USB_DT_CS_ENDPOINT comes *before* the standard enpoint. Devices known to implement it that way are "Sennheiser BTD-500" and Plantronics USB headsets. When the driver can't find the USB_DT_CS_ENDPOINT, it won't be able to change sample rates, as the bitmask for the validity of this command is storen in bmAttributes of that descriptor. Fix this by searching the entire interface instead of just the extra bytes of the first endpoint, in case the latter fails. Signed-off-by: Daniel Mack Reported-and-tested-by: Torstein Hegge Reported-and-tested-by: Yves G Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

vm: convert snd_pcm_lib_mmap_iomem() to vm_iomap_memory() helper

2013-04-26T04:19:56Z

commit 0fe09a45c4848b5b5607b968d959fdc1821c161d upstream. This is my example conversion of a few existing mmap users. The pcm mmap case is one of the more straightforward ones. Acked-by: Takashi Iwai Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman