Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (232 commits)
  USB: Add USB-ID for Multiplex RC serial adapter to cp210x.c
  xhci: Clean up 32-bit build warnings.
  USB: update documentation for usbmon
  usb: usb-storage doesn't support dynamic id currently, the patch disables the feature to fix an oops
  drivers/usb/class/cdc-acm.c: clear dangling pointer
  drivers/usb/dwc3/dwc3-pci.c: introduce missing kfree
  drivers/usb/host/isp1760-if.c: introduce missing kfree
  usb: option: add ZD Incorporated HSPA modem
  usb: ch9: fix up MaxStreams helper
  USB: usb-skeleton.c: cleanup open_count
  USB: usb-skeleton.c: fix open/disconnect race
  xhci: Properly handle COMP_2ND_BW_ERR
  USB: remove dead code from suspend/resume path
  USB: add quirk for another camera
  drivers: usb: wusbcore: Fix dependency for USB_WUSB
  xhci: Better debugging for critical host errors.
  xhci: Be less verbose during URB cancellation.
  xhci: Remove debugging about ring structure allocation.
  xhci: Remove debugging about toggling cycle bits.
  xhci: Remove debugging for individual transfers.
  ...

1 files changed, 36 insertions, 23 deletions

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index fd67cc53545..adfe660ed00 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -92,6 +92,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */
 	{ USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */
 	{ USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */
+	{ USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */
 	{ USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */
 	{ USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
 	{ USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
@@ -280,7 +281,10 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
 		dbg("%s - Unable to send config request, "
 				"request=0x%x size=%d result=%d\n",
 				__func__, request, size, result);
-		return -EPROTO;
+		if (result > 0)
+			result = -EPROTO;
+
+		return result;
 	}
 
 	return 0;
@@ -331,7 +335,10 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
 		dbg("%s - Unable to send request, "
 				"request=0x%x size=%d result=%d\n",
 				__func__, request, size, result);
-		return -EPROTO;
+		if (result > 0)
+			result = -EPROTO;
+
+		return result;
 	}
 
 	return 0;
@@ -395,10 +402,11 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
 
 	dbg("%s - port %d", __func__, port->number);
 
-	if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) {
-		dev_err(&port->dev, "%s - Unable to enable UART\n",
-				__func__);
-		return -EPROTO;
+	result = cp210x_set_config_single(port, CP210X_IFC_ENABLE,
+								UART_ENABLE);
+	if (result) {
+		dev_err(&port->dev, "%s - Unable to enable UART\n", __func__);
+		return result;
 	}
 
 	result = usb_serial_generic_open(tty, port);
@@ -520,18 +528,13 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
 		cflag |= PARENB;
 		break;
 	case BITS_PARITY_MARK:
-		dbg("%s - parity = MARK (not supported, disabling parity)",
-				__func__);
-		cflag &= ~PARENB;
-		bits &= ~BITS_PARITY_MASK;
-		cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
+		dbg("%s - parity = MARK", __func__);
+		cflag |= (PARENB|PARODD|CMSPAR);
 		break;
 	case BITS_PARITY_SPACE:
-		dbg("%s - parity = SPACE (not supported, disabling parity)",
-				__func__);
-		cflag &= ~PARENB;
-		bits &= ~BITS_PARITY_MASK;
-		cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
+		dbg("%s - parity = SPACE", __func__);
+		cflag &= ~PARODD;
+		cflag |= (PARENB|CMSPAR);
 		break;
 	default:
 		dbg("%s - Unknown parity mode, disabling parity", __func__);
@@ -588,7 +591,6 @@ static void cp210x_set_termios(struct tty_struct *tty,
 	if (!tty)
 		return;
 
-	tty->termios->c_cflag &= ~CMSPAR;
 	cflag = tty->termios->c_cflag;
 	old_cflag = old_termios->c_cflag;
 	baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty));
@@ -643,16 +645,27 @@ static void cp210x_set_termios(struct tty_struct *tty,
 					"not supported by device\n");
 	}
 
-	if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) {
+	if ((cflag     & (PARENB|PARODD|CMSPAR)) !=
+	    (old_cflag & (PARENB|PARODD|CMSPAR))) {
 		cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
 		bits &= ~BITS_PARITY_MASK;
 		if (cflag & PARENB) {
-			if (cflag & PARODD) {
-				bits |= BITS_PARITY_ODD;
-				dbg("%s - parity = ODD", __func__);
+			if (cflag & CMSPAR) {
+			    if (cflag & PARODD) {
+				    bits |= BITS_PARITY_MARK;
+				    dbg("%s - parity = MARK", __func__);
+			    } else {
+				    bits |= BITS_PARITY_SPACE;
+				    dbg("%s - parity = SPACE", __func__);
+			    }
 			} else {
-				bits |= BITS_PARITY_EVEN;
-				dbg("%s - parity = EVEN", __func__);
+			    if (cflag & PARODD) {
+				    bits |= BITS_PARITY_ODD;
+				    dbg("%s - parity = ODD", __func__);
+			    } else {
+				    bits |= BITS_PARITY_EVEN;
+				    dbg("%s - parity = EVEN", __func__);
+			    }
 			}
 		}
 		if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))