-
-/************************************************************************
- * *
- * Get string descriptor from device *
- * *
- ************************************************************************/
-static int get_string(struct usb_device *dev, int Id, char *string, int buflen)
-{
- struct usb_string_descriptor *StringDesc = NULL;
- struct usb_string_descriptor *pStringDesc = NULL;
- int ret = 0;
-
- dbg("%s - USB String ID = %d", __func__, Id);
-
- StringDesc = kmalloc(sizeof(*StringDesc), GFP_KERNEL);
- if (!StringDesc)
- goto free;
- if (usb_get_descriptor(dev, USB_DT_STRING, Id, StringDesc, sizeof(*StringDesc)) <= 0)
- goto free;
-
- pStringDesc = kmalloc(StringDesc->bLength, GFP_KERNEL);
- if (!pStringDesc)
- goto free;
-
- if (usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc->bLength) <= 0)
- goto free;
-
- unicode_to_ascii(string, buflen, pStringDesc->wData, pStringDesc->bLength/2);
- ret = strlen(string);
- dbg("%s - USB String %s", __func__, string);
-free:
- kfree(StringDesc);
- kfree(pStringDesc);
- return ret;
-}
-
-