Commit c5d08c19 authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Linus Torvalds

[PATCH] Remove test/set_bit from dl2k

This driver does not need to use atomic operations on local variables.
parent 8020f933
......@@ -1140,10 +1140,6 @@ set_multicast (struct net_device *dev)
long ioaddr = dev->base_addr;
u32 hash_table[2];
u16 rx_mode = 0;
int i;
int bit;
long index, crc;
struct dev_mc_list *mclist;
struct netdev_private *np = dev->priv;
hash_table[0] = hash_table[1] = 0;
......@@ -1157,6 +1153,8 @@ set_multicast (struct net_device *dev)
/* Receive broadcast and multicast frames */
rx_mode = ReceiveBroadcast | ReceiveMulticast | ReceiveUnicast;
} else if (dev->mc_count > 0) {
int i;
struct dev_mc_list *mclist;
/* Receive broadcast frames and multicast frames filtering
by Hashtable */
rx_mode =
......@@ -1164,14 +1162,13 @@ set_multicast (struct net_device *dev)
for (i=0, mclist = dev->mc_list; mclist && i < dev->mc_count;
i++, mclist=mclist->next)
{
crc = ether_crc_le (ETH_ALEN, mclist->dmi_addr);
int bit, index = 0;
int crc = ether_crc_le (ETH_ALEN, mclist->dmi_addr);
/* The inverted high significant 6 bits of CRC are
used as an index to hashtable */
for (index=0, bit=0; bit < 6; bit++) {
if (test_bit(31-bit, &crc)) {
set_bit(bit, &index);
}
}
for (bit = 0; bit < 6; bit++)
if (crc & (1 << (31 - bit)))
index |= (1 << bit);
hash_table[index / 32] |= (1 << (index % 32));
}
} else {
......
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