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atp: remove set_rx_mode_8012() 

Building atp.o triggers this GCC warning:
    drivers/net/ethernet/realtek/atp.c: In function ‘set_rx_mode’:
    drivers/net/ethernet/realtek/atp.c:871:26: warning: ‘mc_filter[0]’ may be used uninitialized in this function [-Wuninitialized]

GCC is correct. In promiscuous mode 'mc_filter' will be used
uninitialized in set_rx_mode_8012(), which is apparently inlined into
set_rx_mode().

But it turns out set_rx_mode_8012() will never be called, since
net_local.chip_type will always be RTL8002. So we can just remove
set_rx_mode_8012() and do some related cleanups.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Bolle 2012-11-02 23:53:15 +00:00 коммит произвёл David S. Miller
Родитель 5250c9694f
Коммит bb263e18f4
2 изменённых файлов: 2 добавлений и 58 удалений
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58
drivers/net/ethernet/realtek/atp.c
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@ -175,8 +175,7 @@ struct net_local {
unsigned int tx_unit_busy:1;
unsigned char re_tx, /* Number of packet retransmissions. */
addr_mode, /* Current Rx filter e.g. promiscuous, etc. */
pac_cnt_in_tx_buf,
chip_type;
pac_cnt_in_tx_buf;
};
/* This code, written by wwc@super.org, resets the adapter every
@ -339,7 +338,6 @@ static int __init atp_probe1(long ioaddr)
write_reg_high(ioaddr, CMR1, CMR1h_RESET | CMR1h_MUX);
lp = netdev_priv(dev);
lp->chip_type = RTL8002;
lp->addr_mode = CMR2h_Normal;
spin_lock_init(&lp->lock);
@ -852,7 +850,7 @@ net_close(struct net_device *dev)
* Set or clear the multicast filter for this adapter.
*/
static void set_rx_mode_8002(struct net_device *dev)
static void set_rx_mode(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
@ -864,58 +862,6 @@ static void set_rx_mode_8002(struct net_device *dev)
write_reg_high(ioaddr, CMR2, lp->addr_mode);
}
static void set_rx_mode_8012(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
long ioaddr = dev->base_addr;
unsigned char new_mode, mc_filter[8]; /* Multicast hash filter */
int i;
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
new_mode = CMR2h_PROMISC;
} else if ((netdev_mc_count(dev) > 1000) ||
(dev->flags & IFF_ALLMULTI)) {
/* Too many to filter perfectly -- accept all multicasts. */
memset(mc_filter, 0xff, sizeof(mc_filter));
new_mode = CMR2h_Normal;
} else {
struct netdev_hw_addr *ha;
memset(mc_filter, 0, sizeof(mc_filter));
netdev_for_each_mc_addr(ha, dev) {
int filterbit = ether_crc_le(ETH_ALEN, ha->addr) & 0x3f;
mc_filter[filterbit >> 5] |= 1 << (filterbit & 31);
}
new_mode = CMR2h_Normal;
}
lp->addr_mode = new_mode;
write_reg(ioaddr, CMR2, CMR2_IRQOUT | 0x04); /* Switch to page 1. */
for (i = 0; i < 8; i++)
write_reg_byte(ioaddr, i, mc_filter[i]);
if (net_debug > 2 || 1) {
lp->addr_mode = 1;
printk(KERN_DEBUG "%s: Mode %d, setting multicast filter to",
dev->name, lp->addr_mode);
for (i = 0; i < 8; i++)
printk(" %2.2x", mc_filter[i]);
printk(".\n");
}
write_reg_high(ioaddr, CMR2, lp->addr_mode);
write_reg(ioaddr, CMR2, CMR2_IRQOUT); /* Switch back to page 0 */
}
static void set_rx_mode(struct net_device *dev)
{
struct net_local *lp = netdev_priv(dev);
if (lp->chip_type == RTL8002)
return set_rx_mode_8002(dev);
else
return set_rx_mode_8012(dev);
}
static int __init atp_init_module(void) {
if (debug) /* Emit version even if no cards detected. */
printk(KERN_INFO "%s", version);

2
drivers/net/ethernet/realtek/atp.h
Просмотреть файл

@ -16,8 +16,6 @@ struct rx_header {
#define PAR_STATUS 1
#define PAR_CONTROL 2
enum chip_type { RTL8002, RTL8012 };
#define Ctrl_LNibRead 0x08 /* LP_PSELECP */
#define Ctrl_HNibRead 0
#define Ctrl_LNibWrite 0x08 /* LP_PSELECP */