Date: Sat, 2 Aug 2008 16:13:59 GMT From: Hans Petter Selasky <hselasky@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 146465 for review Message-ID: <200808021613.m72GDxXP035887@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=146465 Change 146465 by hselasky@hselasky_laptop001 on 2008/08/02 16:13:36 Patch gotten from Andrew Thompson. Affected files ... .. //depot/projects/usb/src/sys/dev/usb2/serial/usb2_serial.c#3 edit Differences ... ==== //depot/projects/usb/src/sys/dev/usb2/serial/usb2_serial.c#3 (text+ko) ==== @@ -966,7 +966,15 @@ DPRINTF(0, "sc = %p\n", sc); + if (tp->t_outq.c_cc == 0) { + /* + * The TTY layer does not expect TS_BUSY to be set + * when there are no characters to output. + */ + return; + } if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) { + /* The higher layer is not ready */ return; } tp->t_state |= TS_BUSY;
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