X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fusb%2Fserial%2Fiuu_phoenix.c;fp=kernel%2Fdrivers%2Fusb%2Fserial%2Fiuu_phoenix.c;h=7ed7d33d6c10e6c695f9e37f5b7b58a27b2c89d7;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=5ad4a0fb4b26ff67380b00e5023ca24e77078266;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/drivers/usb/serial/iuu_phoenix.c b/kernel/drivers/usb/serial/iuu_phoenix.c
index 5ad4a0fb4..7ed7d33d6 100644
--- a/kernel/drivers/usb/serial/iuu_phoenix.c
+++ b/kernel/drivers/usb/serial/iuu_phoenix.c
@@ -68,6 +68,16 @@ struct iuu_private {
 	u32 clk;
 };
 
+static int iuu_attach(struct usb_serial *serial)
+{
+	unsigned char num_ports = serial->num_ports;
+
+	if (serial->num_bulk_in < num_ports || serial->num_bulk_out < num_ports)
+		return -ENODEV;
+
+	return 0;
+}
+
 static int iuu_port_probe(struct usb_serial_port *port)
 {
 	struct iuu_private *priv;
@@ -1196,6 +1206,7 @@ static struct usb_serial_driver iuu_device = {
 	.tiocmset = iuu_tiocmset,
 	.set_termios = iuu_set_termios,
 	.init_termios = iuu_init_termios,
+	.attach = iuu_attach,
 	.port_probe = iuu_port_probe,
 	.port_remove = iuu_port_remove,
 };