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Commit c7b08211 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "ALSA: usb-audio: Fix the mixer control range limiting issue"

parents 873c696d 44e46941

sound/usb/mixer.c

+4 −2
Original line number Diff line number Diff line
@@ -1235,8 +1235,10 @@ static int get_min_max_with_quirks(struct usb_mixer_elem_info *cval, 
	/* USB descriptions contain the dB scale in 1/256 dB unit

	 * while ALSA TLV contains in 1/100 dB unit

	 */

	cval->dBmin = (convert_signed_value(cval, cval->min) * 100) / 256;

	cval->dBmax = (convert_signed_value(cval, cval->max) * 100) / 256;

	cval->dBmin =

		(convert_signed_value(cval, cval->min) * 100) / (cval->res);

	cval->dBmax =

		(convert_signed_value(cval, cval->max) * 100) / (cval->res);

	if (cval->dBmin > cval->dBmax) {

		/* something is wrong; assume it's either from/to 0dB */

		if (cval->dBmin < 0)