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>
This commit is contained in:
parent
01cced2507
commit
c10746dbb3
|
@ -213,17 +213,38 @@ static void usb_console_write(struct console *co, const char *buf, unsigned coun
|
|||
|
||||
if (!port->open_count) {
|
||||
dbg ("%s - port not opened", __FUNCTION__);
|
||||
goto exit;
|
||||
return;
|
||||
}
|
||||
|
||||
/* pass on to the driver specific version of this function if it is available */
|
||||
if (serial->type->write)
|
||||
retval = serial->type->write(port, buf, count);
|
||||
else
|
||||
retval = usb_serial_generic_write(port, buf, count);
|
||||
|
||||
exit:
|
||||
dbg("%s - return value (if we had one): %d", __FUNCTION__, retval);
|
||||
while (count) {
|
||||
unsigned int i;
|
||||
unsigned int lf;
|
||||
/* search for LF so we can insert CR if necessary */
|
||||
for (i=0, lf=0 ; i < count ; i++) {
|
||||
if (*(buf + i) == 10) {
|
||||
lf = 1;
|
||||
i++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* pass on to the driver specific version of this function if it is available */
|
||||
if (serial->type->write)
|
||||
retval = serial->type->write(port, buf, i);
|
||||
else
|
||||
retval = usb_serial_generic_write(port, buf, i);
|
||||
dbg("%s - return value : %d", __FUNCTION__, retval);
|
||||
if (lf) {
|
||||
/* append CR after LF */
|
||||
unsigned char cr = 13;
|
||||
if (serial->type->write)
|
||||
retval = serial->type->write(port, &cr, 1);
|
||||
else
|
||||
retval = usb_serial_generic_write(port, &cr, 1);
|
||||
dbg("%s - return value : %d", __FUNCTION__, retval);
|
||||
}
|
||||
buf += i;
|
||||
count -= i;
|
||||
}
|
||||
}
|
||||
|
||||
static struct console usbcons = {
|
||||
|
|
Loading…
Reference in New Issue