diff options
| -rw-r--r-- | drivers/usb/gadget/f_rndis.c | 24 | ||||
| -rw-r--r-- | drivers/usb/gadget/u_rndis.h | 3 |
2 files changed, 24 insertions, 3 deletions
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 139bc9c6f7e0..28d1891f11fa 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -682,6 +682,15 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) rndis_opts = container_of(f->fi, struct f_rndis_opts, func_inst); + if (cdev->use_os_string) { + f->os_desc_table = kzalloc(sizeof(*f->os_desc_table), + GFP_KERNEL); + if (!f->os_desc_table) + return PTR_ERR(f->os_desc_table); + f->os_desc_n = 1; + f->os_desc_table[0].os_desc = &rndis_opts->rndis_os_desc; + } + /* * in drivers/usb/gadget/configfs.c:configfs_composite_bind() * configurations are bound in sequence with list_for_each_entry, @@ -693,14 +702,16 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) gether_set_gadget(rndis_opts->net, cdev->gadget); status = gether_register_netdev(rndis_opts->net); if (status) - return status; + goto fail; rndis_opts->bound = true; } us = usb_gstrings_attach(cdev, rndis_strings, ARRAY_SIZE(rndis_string_defs)); - if (IS_ERR(us)) - return PTR_ERR(us); + if (IS_ERR(us)) { + status = PTR_ERR(us); + goto fail; + } rndis_control_intf.iInterface = us[0].id; rndis_data_intf.iInterface = us[1].id; rndis_iad_descriptor.iFunction = us[2].id; @@ -802,6 +813,8 @@ rndis_bind(struct usb_configuration *c, struct usb_function *f) return 0; fail: + kfree(f->os_desc_table); + f->os_desc_n = 0; usb_free_all_descriptors(f); if (rndis->notify_req) { @@ -892,6 +905,8 @@ static struct usb_function_instance *rndis_alloc_inst(void) opts = kzalloc(sizeof(*opts), GFP_KERNEL); if (!opts) return ERR_PTR(-ENOMEM); + opts->rndis_os_desc.ext_compat_id = opts->rndis_ext_compat_id; + mutex_init(&opts->lock); opts->func_inst.free_func_inst = rndis_free_inst; opts->net = gether_setup_default(); @@ -900,6 +915,7 @@ static struct usb_function_instance *rndis_alloc_inst(void) kfree(opts); return ERR_CAST(net); } + INIT_LIST_HEAD(&opts->rndis_os_desc.ext_prop); config_group_init_type_name(&opts->func_inst.group, "", &rndis_func_type); @@ -925,6 +941,8 @@ static void rndis_unbind(struct usb_configuration *c, struct usb_function *f) { struct f_rndis *rndis = func_to_rndis(f); + kfree(f->os_desc_table); + f->os_desc_n = 0; usb_free_all_descriptors(f); kfree(rndis->notify_req->buf); diff --git a/drivers/usb/gadget/u_rndis.h b/drivers/usb/gadget/u_rndis.h index 7291b15c9dce..e902aa42a297 100644 --- a/drivers/usb/gadget/u_rndis.h +++ b/drivers/usb/gadget/u_rndis.h @@ -26,6 +26,9 @@ struct f_rndis_opts { bool bound; bool borrowed_net; + struct usb_os_desc rndis_os_desc; + char rndis_ext_compat_id[16]; + /* * Read/write access to configfs attributes is handled by configfs. * |
