staging: vt6656: main_usb.c ether_crc use kernel code
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>
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@ -44,6 +44,7 @@
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#include <net/cfg80211.h>
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#include <linux/timer.h>
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#include <linux/usb.h>
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#include <linux/crc32.h>
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#ifdef SIOCETHTOOL
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#define DEVICE_ETHTOOL_IOCTL_SUPPORT
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@ -1194,22 +1194,6 @@ static int device_xmit(struct sk_buff *skb, struct net_device *dev)
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return NETDEV_TX_OK;
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}
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static unsigned const ethernet_polynomial = 0x04c11db7U;
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static inline u32 ether_crc(int length, unsigned char *data)
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{
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int crc = -1;
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while(--length >= 0) {
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unsigned char current_octet = *data++;
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int bit;
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for (bit = 0; bit < 8; bit++, current_octet >>= 1) {
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crc = (crc << 1) ^
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((crc < 0) ^ (current_octet & 1) ? ethernet_polynomial : 0);
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}
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}
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return crc;
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}
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/* find out the start position of str2 from str1 */
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static unsigned char *kstrstr(const unsigned char *str1,
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const unsigned char *str2) {
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