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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>
This commit is contained in:
Bjørn Mork 2013-11-01 11:16:47 +01:00 committed by David S. Miller
parent 1b5287a7ab
commit 832922362e
2 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/usb/cdc_ncm.c
View File

@ -372,6 +372,7 @@ static const struct ethtool_ops cdc_ncm_ethtool_ops = {
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 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
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 @@ advance:
}
/* 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");

4
include/linux/usb/cdc_ncm.h
View File

@ -92,9 +92,7 @@ struct cdc_ncm_ctx {
struct tasklet_struct bh;
const struct usb_cdc_ncm_desc *func_desc;
const struct usb_cdc_mbim_desc *mbim_desc;
const struct usb_cdc_header_desc *header_desc;
const struct usb_cdc_union_desc *union_desc;
const struct usb_cdc_mbim_desc *mbim_desc;
const struct usb_cdc_ether_desc *ether_desc;
struct usb_interface *control;