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usb: gadget: OS descriptors: provide interface directory names 

Function's interface directories need to be created when the function
directory is created, but interface numbers are not known until
the gadget is ready and bound to udc, so we cannot use numbers
as part of interface directory names.
Let the client decide what names to use.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
hifive-unleashed-5.1
Andrzej Pietrasiewicz 2014-06-18 14:24:49 +02:00 committed by Felipe Balbi
parent fe00b13829
commit 14574b546d
3 changed files with 7 additions and 3 deletions
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5
drivers/usb/gadget/configfs.c
View File

@ -1216,6 +1216,7 @@ static struct configfs_attribute *interf_grp_attrs[] = {
int usb_os_desc_prepare_interf_dir(struct config_group *parent,
int n_interf,
struct usb_os_desc **desc,
char **names,
struct module *owner)
{
struct config_group **f_default_groups, *os_desc_group,
@ -1257,8 +1258,8 @@ int usb_os_desc_prepare_interf_dir(struct config_group *parent,
d = desc[n_interf];
d->owner = owner;
config_group_init_type_name(&d->group, "", interface_type);
config_item_set_name(&d->group.cg_item, "interface.%d",
n_interf);
config_item_set_name(&d->group.cg_item, "interface.%s",
names[n_interf]);
interface_groups[n_interf] = &d->group;
}

1
drivers/usb/gadget/configfs.h
View File

@ -8,6 +8,7 @@ void unregister_gadget_item(struct config_item *item);
int usb_os_desc_prepare_interf_dir(struct config_group *parent,
int n_interf,
struct usb_os_desc **desc,
char **names,
struct module *owner);
static inline struct usb_os_desc *to_usb_os_desc(struct config_item *item)

4
drivers/usb/gadget/f_rndis.c
View File

@ -905,6 +905,7 @@ static struct usb_function_instance *rndis_alloc_inst(void)
{
struct f_rndis_opts *opts;
struct usb_os_desc *descs[1];
char *names[1];
opts = kzalloc(sizeof(*opts), GFP_KERNEL);
if (!opts)
@ -922,8 +923,9 @@ static struct usb_function_instance *rndis_alloc_inst(void)
INIT_LIST_HEAD(&opts->rndis_os_desc.ext_prop);
descs[0] = &opts->rndis_os_desc;
names[0] = "rndis";
usb_os_desc_prepare_interf_dir(&opts->func_inst.group, 1, descs,
THIS_MODULE);
names, THIS_MODULE);
config_group_init_type_name(&opts->func_inst.group, "",
&rndis_func_type);