From 6538808c5619850cfedc9bee6d64d3793b31923d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Thu, 16 Mar 2017 17:13:33 +0100 Subject: [PATCH] USB: serial: relax generic driver bulk-endpoint requirement Relax the generic driver bulk-endpoint requirement. The driver handles devices without bulk-out endpoints just fine these days. Signed-off-by: Johan Hovold --- drivers/usb/serial/generic.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 2d3599f..35cb8c0 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -52,10 +52,12 @@ static int usb_serial_generic_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds) { struct device *dev = &serial->interface->dev; - int num_ports = epds->num_bulk_out; + int num_ports; + + num_ports = max(epds->num_bulk_in, epds->num_bulk_out); if (num_ports == 0) { - dev_err(dev, "Generic device with no bulk out, not allowed.\n"); + dev_err(dev, "device has no bulk endpoints\n"); return -ENODEV; } -- 2.7.4