net: cdc_ncm: remove descriptor pointers
header_desc was completely unused and union_desc was never used
outside cdc_ncm_bind_common.
Cc: Alexey Orishko <alexey.orishko@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index b8de8dd..435fcc7 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -372,6 +372,7 @@
int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting)
{
+ const struct usb_cdc_union_desc *union_desc = NULL;
struct cdc_ncm_ctx *ctx;
struct usb_driver *driver;
u8 *buf;
@@ -406,16 +407,15 @@
switch (buf[2]) {
case USB_CDC_UNION_TYPE:
- if (buf[0] < sizeof(*(ctx->union_desc)))
+ if (buf[0] < sizeof(*union_desc))
break;
- ctx->union_desc =
- (const struct usb_cdc_union_desc *)buf;
+ union_desc = (const struct usb_cdc_union_desc *)buf;
ctx->control = usb_ifnum_to_if(dev->udev,
- ctx->union_desc->bMasterInterface0);
+ union_desc->bMasterInterface0);
ctx->data = usb_ifnum_to_if(dev->udev,
- ctx->union_desc->bSlaveInterface0);
+ union_desc->bSlaveInterface0);
break;
case USB_CDC_ETHERNET_TYPE:
@@ -458,7 +458,7 @@
}
/* some buggy devices have an IAD but no CDC Union */
- if (!ctx->union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) {
+ if (!union_desc && intf->intf_assoc && intf->intf_assoc->bInterfaceCount == 2) {
ctx->control = intf;
ctx->data = usb_ifnum_to_if(dev->udev, intf->cur_altsetting->desc.bInterfaceNumber + 1);
dev_dbg(&intf->dev, "CDC Union missing - got slave from IAD\n");