static bool legacy_is_function_supported(struct usb_function *func)
{
- /*
- * TODO
- * Instead of only checking whether we know this function
- * we should also parse sysfs to check if it is build into
- * slp-gadget.
- */
- if (find_usb_function_by_name(func->name))
- return true;
- else
+ char buf[PATH_MAX];
+
+ snprintf (buf, sizeof(buf), "%s/f_%s", LEGACY_ROOTPATH, func->name);
+ if (access(buf, F_OK))
return false;
+
+ return true;
}
static bool legacy_is_gadget_supported(struct usb_gadget *gadget)
{
int i, j;
+ struct usb_configuration *config;
- if (!gadget || !gadget->configs || !gadget->funcs)
+ if (!gadget || !gadget->configs || !gadget->configs[0] || !gadget->configs[0]->funcs[0])
return false;
+ if (!gadget->attrs.idVendor || !gadget->attrs.idProduct || !gadget->attrs.bcdDevice)
+ return false;
+
/* only strings in US_en are allowed */
if (gadget->strs.lang_code != DEFAULT_LANG)
return false;
return false;
for (j = 0; gadget->configs[j]; ++j) {
- struct usb_configuration *config = gadget->configs[j];
+ config = gadget->configs[j];
if (!config->funcs)
return false;
return false;
}
- if (j == 0 || j > 2)
- return false;
-
return true;
}
/* TODO. Maybe move this to sys ? */
static int legacy_set_int_hex(char *path, int val)
{
- char buf[MAX_GADGET_STR_LEN];
int r;
+ char buf[MAX_GADGET_STR_LEN];
if (!path)
return -EINVAL;
if (!usb || !gadget)
return -EINVAL;
+ /* Verify the gadget and check if function is supported */
if (!legacy_is_gadget_supported(gadget))
return -ENOTSUP;