diff options
| author | Li Jun <jun.li@freescale.com> | 2015-06-08 17:35:14 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-07-22 10:22:19 +0800 |
| commit | 6db0d3a74c1e6a749c3c9340f12b9157fa73b195 (patch) | |
| tree | f6d2cddd4fadbc1194a70703dc0d73631e72fe58 | |
| parent | f11de4e5ba5579bde417e4ae29f734640b386475 (diff) | |
MLK-11266-6 usb: gadget: multi: allocate and init otg descriptor by otg capabilities
Allocate and initialize usb otg descriptor according to gadget otg
capabilities, add it for each usb configurations. If otg capability
is not defined, keep its original otg descriptor unchanged.
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
(cherry picked from commit 8ae537f7975864aaec9c97162f5c514d1a3773b0)
| -rw-r--r-- | drivers/usb/gadget/multi.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c index 2ab5d71c3365..009392d0494f 100644 --- a/drivers/usb/gadget/multi.c +++ b/drivers/usb/gadget/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, @@ -429,14 +415,25 @@ 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 */ @@ -445,6 +442,9 @@ 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: @@ -490,6 +490,9 @@ static int __exit 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; } |