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staging: vt6656: main_usb.c ether_crc use kernel code

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use ether_crc already in kernel and remove local version.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Malcolm Priestley 2013-11-03 19:02:41 +00:00 committed by Greg Kroah-Hartman
parent cbc06fb10c
commit f0fde117c1
2 changed files with 1 additions and 16 deletions
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1
drivers/staging/vt6656/device.h
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@ -44,6 +44,7 @@
#include <net/cfg80211.h>
#include <linux/timer.h>
#include <linux/usb.h>
#include <linux/crc32.h>
#ifdef SIOCETHTOOL
#define DEVICE_ETHTOOL_IOCTL_SUPPORT

16
drivers/staging/vt6656/main_usb.c
View File

@ -1194,22 +1194,6 @@ static int device_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
static unsigned const ethernet_polynomial = 0x04c11db7U;
static inline u32 ether_crc(int length, unsigned char *data)
{
int crc = -1;
while(--length >= 0) {
unsigned char current_octet = *data++;
int bit;
for (bit = 0; bit < 8; bit++, current_octet >>= 1) {
crc = (crc << 1) ^
((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0);
}
}
return crc;
}
/* find out the start position of str2 from str1 */
static unsigned char *kstrstr(const unsigned char *str1,
const unsigned char *str2) {