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wl1251: Generate random MAC address only if driver does not have valid 

Before this patch, driver generated random MAC address every time it was
initialized. After that random MAC address could be overwritten with fixed
one, if provided.

This patch changes order. First it tries to read fixed MAC address and if
it fails then driver generates random MAC address.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Pali Rohár 2017-11-10 00:38:24 +01:00 committed by Kalle Valo
parent f63b4c971f
commit 562da3a39c
1 changed files with 18 additions and 9 deletions
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27
drivers/net/wireless/ti/wl1251/main.c
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@ -1491,7 +1491,24 @@ int wl1251_init_ieee80211(struct wl1251 *wl)
wl->hw->queues = 4;
if (wl->use_eeprom)
wl1251_read_eeprom_mac(wl);
ret = wl1251_read_eeprom_mac(wl);
else
ret = -EINVAL;
if (ret == 0 && !is_valid_ether_addr(wl->mac_addr))
ret = -EINVAL;
if (ret < 0) {
/*
* In case our MAC address is not correctly set,
* we use a random but Nokia MAC.
*/
static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
memcpy(wl->mac_addr, nokia_oui, 3);
get_random_bytes(wl->mac_addr + 3, 3);
wl1251_warning("MAC address in eeprom or nvs data is not valid");
wl1251_warning("Setting random MAC address: %pM", wl->mac_addr);
}
ret = wl1251_register_hw(wl);
if (ret)
@ -1512,7 +1529,6 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
struct ieee80211_hw *hw;
struct wl1251 *wl;
int i;
static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
if (!hw) {
@ -1562,13 +1578,6 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
INIT_WORK(&wl->irq_work, wl1251_irq_work);
INIT_WORK(&wl->tx_work, wl1251_tx_work);
/*
* In case our MAC address is not correctly set,
* we use a random but Nokia MAC.
*/
memcpy(wl->mac_addr, nokia_oui, 3);
get_random_bytes(wl->mac_addr + 3, 3);
wl->state = WL1251_STATE_OFF;
mutex_init(&wl->mutex);
spin_lock_init(&wl->wl_lock);