usb: gadget: f_rndis: OS Descriptors configfs support

Added handling of OS Descriptors support for f_rndis.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index 28d1891f11fa..f1bf5763eac4 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -27,6 +27,7 @@
 #include "u_ether_configfs.h"
 #include "u_rndis.h"
 #include "rndis.h"
+#include "configfs.h"
 
 /*
  * This function is an RNDIS Ethernet port -- a Microsoft protocol that's
@@ -895,12 +896,15 @@ static void rndis_free_inst(struct usb_function_instance *f)
                 else
                         free_netdev(opts->net);
         }
+
+        kfree(opts->rndis_os_desc.group.default_groups); /* single VLA chunk */
         kfree(opts);
 }
 
 static struct usb_function_instance *rndis_alloc_inst(void)
 {
         struct f_rndis_opts *opts;
+        struct usb_os_desc *descs[1];
 
         opts = kzalloc(sizeof(*opts), GFP_KERNEL);
         if (!opts)
@@ -917,6 +921,9 @@ static struct usb_function_instance *rndis_alloc_inst(void)
         }
         INIT_LIST_HEAD(&opts->rndis_os_desc.ext_prop);
 
+        descs[0] = &opts->rndis_os_desc;
+        usb_os_desc_prepare_interf_dir(&opts->func_inst.group, 1, descs,
+                                       THIS_MODULE);
         config_group_init_type_name(&opts->func_inst.group, "",
                                     &rndis_func_type);