Date: Fri, 28 Nov 2008 18:07:51 GMT From: Hans Petter Selasky <hselasky@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 153699 for review Message-ID: <200811281807.mASI7pL5071780@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=153699 Change 153699 by hselasky@hselasky_laptop001 on 2008/11/28 18:07:44 Fix errornous parsing of USB audio mixer data. Affected files ... .. //depot/projects/usb/src/sys/dev/usb2/sound/uaudio2.c#21 edit Differences ... ==== //depot/projects/usb/src/sys/dev/usb2/sound/uaudio2.c#21 (text+ko) ==== @@ -2656,7 +2656,10 @@ DPRINTF("invalid Audio Control header\n"); goto done; } - wTotalLen = UGETW(cd->wTotalLength); + /* "wTotalLen" is allowed to be corrupt */ + wTotalLen = UGETW(acdp->wTotalLength) - acdp->bLength; + + /* get USB audio revision */ sc->sc_audio_rev = UGETW(acdp->bcdADC); DPRINTFN(3, "found AC header, vers=%03x, len=%d\n",
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