Date: Thu, 30 Jul 2009 00:16:06 +0000 (UTC) From: Alfred Perlstein <alfred@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r195964 - head/sys/dev/usb/serial Message-ID: <200907300016.n6U0G6H8086547@svn.freebsd.org>
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Author: alfred Date: Thu Jul 30 00:16:06 2009 New Revision: 195964 URL: http://svn.freebsd.org/changeset/base/195964 Log: ULPT: - add conditional printer status checking - P4 ID: 166176 Submitted by: hps Approved by: re Modified: head/sys/dev/usb/serial/ulpt.c Modified: head/sys/dev/usb/serial/ulpt.c ============================================================================== --- head/sys/dev/usb/serial/ulpt.c Thu Jul 30 00:15:50 2009 (r195963) +++ head/sys/dev/usb/serial/ulpt.c Thu Jul 30 00:16:06 2009 (r195964) @@ -426,6 +426,9 @@ ulpt_open(struct usb_fifo *fifo, int ffl /* we assume that open is a serial process */ if (sc->sc_fflags == 0) { + + /* reset USB paralell port */ + ulpt_reset(sc); } return (unlpt_open(fifo, fflags)); @@ -720,7 +723,12 @@ ulpt_watchdog(void *arg) mtx_assert(&sc->sc_mtx, MA_OWNED); - usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); + /* + * Only read status while the device is not opened, due to + * possible hardware or firmware bug in some printers. + */ + if (sc->sc_fflags == 0) + usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]); usb_callout_reset(&sc->sc_watchdog, hz, &ulpt_watchdog, sc);
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