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path: root/kernel/drivers/usb/gadget/legacy/multi.c
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Diffstat (limited to 'kernel/drivers/usb/gadget/legacy/multi.c')
-rw-r--r--kernel/drivers/usb/gadget/legacy/multi.c43
1 files changed, 20 insertions, 23 deletions
diff --git a/kernel/drivers/usb/gadget/legacy/multi.c b/kernel/drivers/usb/gadget/legacy/multi.c
index b21b51f0c..4fe794ddc 100644
--- a/kernel/drivers/usb/gadget/legacy/multi.c
+++ b/kernel/drivers/usb/gadget/legacy/multi.c
@@ -78,21 +78,7 @@ static struct usb_device_descriptor device_desc = {
.idProduct = cpu_to_le16(MULTI_PRODUCT_NUM),
};
-
-static const struct usb_descriptor_header *otg_desc[] = {
- (struct usb_descriptor_header *) &(struct usb_otg_descriptor){
- .bLength = sizeof(struct usb_otg_descriptor),
- .bDescriptorType = USB_DT_OTG,
-
- /*
- * REVISIT SRP-only hardware is possible, although
- * it would not be called "OTG" ...
- */
- .bmAttributes = USB_OTG_SRP | USB_OTG_HNP,
- },
- NULL,
-};
-
+static const struct usb_descriptor_header *otg_desc[2];
enum {
MULTI_STRING_RNDIS_CONFIG_IDX = USB_GADGET_FIRST_AVAIL_IDX,
@@ -407,10 +393,6 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
if (status)
goto fail2;
- status = fsg_common_set_nluns(fsg_opts->common, config.nluns);
- if (status)
- goto fail_set_nluns;
-
status = fsg_common_set_cdev(fsg_opts->common, cdev, config.can_stall);
if (status)
goto fail_set_cdev;
@@ -429,14 +411,25 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
goto fail_string_ids;
device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
+ if (gadget_is_otg(gadget) && !otg_desc[0]) {
+ struct usb_descriptor_header *usb_desc;
+
+ usb_desc = usb_otg_descriptor_alloc(gadget);
+ if (!usb_desc)
+ goto fail_string_ids;
+ usb_otg_descriptor_init(gadget, usb_desc);
+ otg_desc[0] = usb_desc;
+ otg_desc[1] = NULL;
+ }
+
/* register configurations */
status = rndis_config_register(cdev);
if (unlikely(status < 0))
- goto fail_string_ids;
+ goto fail_otg_desc;
status = cdc_config_register(cdev);
if (unlikely(status < 0))
- goto fail_string_ids;
+ goto fail_otg_desc;
usb_composite_overwrite_options(cdev, &coverwrite);
/* we're done */
@@ -445,11 +438,12 @@ static int __ref multi_bind(struct usb_composite_dev *cdev)
/* error recovery */
+fail_otg_desc:
+ kfree(otg_desc[0]);
+ otg_desc[0] = NULL;
fail_string_ids:
fsg_common_remove_luns(fsg_opts->common);
fail_set_cdev:
- fsg_common_free_luns(fsg_opts->common);
-fail_set_nluns:
fsg_common_free_buffers(fsg_opts->common);
fail2:
usb_put_function_instance(fi_msg);
@@ -490,6 +484,9 @@ static int multi_unbind(struct usb_composite_dev *cdev)
usb_put_function(f_ecm);
usb_put_function_instance(fi_ecm);
#endif
+ kfree(otg_desc[0]);
+ otg_desc[0] = NULL;
+
return 0;
}