USB: g_printer required set interface request
g_printer reqiured "set interface" request from host. Not all hosts send
this request. This patch enable the interface when it get "set
configuration" request from host.
Signed-off-by: Jonas Andersson <jonas@microbit.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index c3f2bd4..271ef94 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -1189,6 +1189,8 @@
else if (gadget->a_alt_hnp_support)
DBG(dev, "HNP needs a different root port\n");
value = printer_set_config(dev, wValue);
+ if (!value)
+ value = set_interface(dev, PRINTER_INTERFACE);
break;
case USB_REQ_GET_CONFIGURATION:
if (ctrl->bRequestType != USB_DIR_IN)