Pawel Moll e32afc122e ALSA: usb: Fix Processing Unit Descriptor parsers ... commit b531f81b0d upstream. Commit 99fc86450c "ALSA: usb-mixer: parse descriptors with structs" introduced a set of useful parsers for descriptors. Unfortunately the parses for the Processing Unit Descriptor came with a very subtle bug... Functions uac_processing_unit_iProcessing() and uac_processing_unit_specific() were indexing the baSourceID array forgetting the fields before the iProcessing and process-specific descriptors. The problem was observed with Sound Blaster Extigy mixer, where nNrModes in Up/Down-mix Processing Unit Descriptor was accessed at offset 10 of the descriptor (value 0) instead of offset 15 (value 7). In result the resulting control had interesting limit values: Simple mixer control 'Channel Routing Mode Select',0 Capabilities: volume volume-joined penum Playback channels: Mono Capture channels: Mono Limits: 0 - -1 Mono: -1 [100%] Fixed by starting from the bmControls, which was calculated correctly, instead of baSourceID. Now the mentioned control is fine: Simple mixer control 'Channel Routing Mode Select',0 Capabilities: volume volume-joined penum Playback channels: Mono Capture channels: Mono Limits: 0 - 6 Mono: 0 [0%] Signed-off-by: Pawel Moll <mail@pawelmoll.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-02-28 06:59:02 -08:00
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association.h
atmel_usba_udc.h
audio-v2.h
audio.h
c67x00.h
cdc-wdm.h
cdc.h
ch9.h
ch11.h
composite.h
ehci_def.h
ehci_pdriver.h
functionfs.h
g_hid.h
g_printer.h
gadget.h
gadgetfs.h
gpio_vbus.h
hcd.h
input.h
intel_mid_otg.h
iowarrior.h
irda.h
isp116x.h
isp1362.h
isp1760.h
Kbuild
langwell_udc.h
m66592.h
midi.h
msm_hsusb.h
msm_hsusb_hw.h
musb.h
net2280.h
ohci_pdriver.h
otg.h
quirks.h
r8a66597.h
renesas_usbhs.h
rndis_host.h
serial.h
sl811.h
storage.h
tmc.h
uas.h
ulpi.h
usbnet.h
video.h
wusb-wa.h
wusb.h