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976a68f06b
The recently introduced unit descriptor validation had some bug for processing and extension units, it counts a bControlSize byte twice so it expected a bigger size than it should have been. This seems resulting in a probe error on a few devices. Fix the calculation for proper checks of PU and EU. Fixes: 57f8770620e9 ("ALSA: usb-audio: More validations of descriptor units") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191114165613.7422-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>