diff options
Diffstat (limited to 'common/usb.c')
| -rw-r--r-- | common/usb.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/common/usb.c b/common/usb.c index 50fa466b4..8407974f7 100644 --- a/common/usb.c +++ b/common/usb.c @@ -348,6 +348,7 @@ static int usb_parse_config(struct usb_device *dev, struct usb_descriptor_header *head; int index, ifno, epno, curr_if_num; u16 ep_wMaxPacketSize; + struct usb_interface *if_desc = NULL; ifno = -1; epno = -1; @@ -375,23 +376,27 @@ static int usb_parse_config(struct usb_device *dev, &buffer[index])->bInterfaceNumber != curr_if_num) { /* this is a new interface, copy new desc */ ifno = dev->config.no_of_if; + if_desc = &dev->config.if_desc[ifno]; dev->config.no_of_if++; - memcpy(&dev->config.if_desc[ifno], - &buffer[index], buffer[index]); - dev->config.if_desc[ifno].no_of_ep = 0; - dev->config.if_desc[ifno].num_altsetting = 1; + memcpy(if_desc, &buffer[index], buffer[index]); + if_desc->no_of_ep = 0; + if_desc->num_altsetting = 1; curr_if_num = - dev->config.if_desc[ifno].desc.bInterfaceNumber; + if_desc->desc.bInterfaceNumber; } else { /* found alternate setting for the interface */ - dev->config.if_desc[ifno].num_altsetting++; + if (ifno >= 0) { + if_desc = &dev->config.if_desc[ifno]; + if_desc->num_altsetting++; + } } break; case USB_DT_ENDPOINT: epno = dev->config.if_desc[ifno].no_of_ep; + if_desc = &dev->config.if_desc[ifno]; /* found an endpoint */ - dev->config.if_desc[ifno].no_of_ep++; - memcpy(&dev->config.if_desc[ifno].ep_desc[epno], + if_desc->no_of_ep++; + memcpy(&if_desc->ep_desc[epno], &buffer[index], buffer[index]); ep_wMaxPacketSize = get_unaligned(&dev->config.\ if_desc[ifno].\ |