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authorClemens Ladisch <clemens@ladisch.de>2010-09-03 10:53:11 +0200
committerTakashi Iwai <tiwai@suse.de>2010-09-03 22:36:39 +0200
commita2acad8298a42b7be684a32fafaf83332bba9c2b (patch)
tree34cddff9b3b8efcc3a60a6e9d0a3e001a714d364 /Makefile
parent7b6717e144de6592e614fd7fc3b914b6bf686a9d (diff)
ALSA: usb-audio: fix detection of vendor-specific device protocol settings
The Audio Class v2 support code in 2.6.35 added checks for the bInterfaceProtocol field. However, there are devices (usually those detected by vendor-specific quirks) that do not have one of the predefined values in this field, which made the driver reject them. To fix this regression, restore the old behaviour, i.e., assume that a device with an unknown bInterfaceProtocol field (other than UAC_VERSION_2) has more or less UAC-v1-compatible descriptors. [compile warning fixes by tiwai] Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Cc: Daniel Mack <daniel@caiaq.de> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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