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[atl1e] Fix compilation on gcc-4.4.1-2.fc11.i586.

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Error message was:

[BUILD] bin/atl1e.oncc1: warnings being treated as errors
drivers/net/atl1e.c: In function 'atl1e_get_permanent_address':
drivers/net/atl1e.c:1326: error: dereferencing type-punned pointer will break strict-aliasing rules
make: *** [bin/atl1e.o] Error 1

Reported-by: Giandomenico  De Tullio <ghisha@email.it>
Signed-off-by: Michael Brown <mcb30@etherboot.org>
Modified-by: Michael Brown <mcb30@etherboot.org>
This commit is contained in:
Joshua Oreman 2009-10-23 17:04:38 +02:00 committed by Michael Brown
parent 8912e24fdc
commit 858b5fd253
1 changed files with 9 additions and 8 deletions
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17
src/drivers/net/atl1e.c
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@ -1296,14 +1296,14 @@ void atl1e_hw_set_mac_addr(struct atl1e_hw *hw)
*/
static int atl1e_get_permanent_address(struct atl1e_hw *hw)
{
u32 addr[2];
union {
u32 dword[2];
u8 byte[8];
} hw_addr;
u32 i;
u32 twsi_ctrl_data;
u8 eth_addr[ETH_ALEN];
/* init */
addr[0] = addr[1] = 0;
if (!atl1e_check_eeprom_exist(hw)) {
/* eeprom exist */
twsi_ctrl_data = AT_READ_REG(hw, REG_TWSI_CTRL);
@ -1320,10 +1320,11 @@ static int atl1e_get_permanent_address(struct atl1e_hw *hw)
}
/* maybe MAC-address is from BIOS */
addr[0] = AT_READ_REG(hw, REG_MAC_STA_ADDR);
addr[1] = AT_READ_REG(hw, REG_MAC_STA_ADDR + 4);
*(u32 *) &eth_addr[2] = swap32(addr[0]);
*(u16 *) &eth_addr[0] = swap16(*(u16 *)&addr[1]);
hw_addr.dword[0] = AT_READ_REG(hw, REG_MAC_STA_ADDR);
hw_addr.dword[1] = AT_READ_REG(hw, REG_MAC_STA_ADDR + 4);
for (i = 0; i < ETH_ALEN; i++) {
eth_addr[ETH_ALEN - i - 1] = hw_addr.byte[i];
}
memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
return 0;