mirror of https://gitee.com/openkylin/linux.git
[PATCH] USB: console: fix cr/lf issues
Append Carriage-Returns after Line-Feeds, analogous to the serial driver. From: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -213,17 +213,38 @@ static void usb_console_write(struct console *co, const char *buf, unsigned coun
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if (!port->open_count) {
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dbg ("%s - port not opened", __FUNCTION__);
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goto exit;
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return;
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}
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while (count) {
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unsigned int i;
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unsigned int lf;
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/* search for LF so we can insert CR if necessary */
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for (i=0, lf=0 ; i < count ; i++) {
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if (*(buf + i) == 10) {
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lf = 1;
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i++;
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break;
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}
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}
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/* pass on to the driver specific version of this function if it is available */
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if (serial->type->write)
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retval = serial->type->write(port, buf, count);
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retval = serial->type->write(port, buf, i);
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else
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retval = usb_serial_generic_write(port, buf, count);
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exit:
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dbg("%s - return value (if we had one): %d", __FUNCTION__, retval);
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retval = usb_serial_generic_write(port, buf, i);
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dbg("%s - return value : %d", __FUNCTION__, retval);
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if (lf) {
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/* append CR after LF */
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unsigned char cr = 13;
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if (serial->type->write)
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retval = serial->type->write(port, &cr, 1);
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else
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retval = usb_serial_generic_write(port, &cr, 1);
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dbg("%s - return value : %d", __FUNCTION__, retval);
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}
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buf += i;
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count -= i;
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}
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}
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static struct console usbcons = {
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