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wifi: ath11k: retrieve MAC address from system firmware if provided 

Devices may provide their own MAC address via system firmware (e.g.,
device tree), especially in the case where the device doesn't have a
useful EEPROM on which to store its MAC address (e.g., for integrated
ahb WCN6750).

Use the generic device helper to retrieve the MAC address, and (if
present) honor it above the MAC address advertised by the card.

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1

Signed-off-by: Jun Yu <junyuu@chromium.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220920003117.841442-1-junyuu@chromium.org
This commit is contained in:
Jun Yu 2022-09-20 00:31:17 +00:00 committed by Kalle Valo
parent 9a2aa68afe
commit 176239a9a2
1 changed files with 7 additions and 1 deletions
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6
drivers/net/wireless/ath/ath11k/mac.c
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@ -9072,6 +9072,7 @@ int ath11k_mac_register(struct ath11k_base *ab)
struct ath11k_pdev *pdev;
int i;
int ret;
u8 mac_addr[ETH_ALEN] = {0};
if (test_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags))
return 0;
@ -9084,13 +9085,18 @@ int ath11k_mac_register(struct ath11k_base *ab)
if (ret)
return ret;
device_get_mac_address(ab->dev, mac_addr);
for (i = 0; i < ab->num_radios; i++) {
pdev = &ab->pdevs[i];
ar = pdev->ar;
if (ab->pdevs_macaddr_valid) {
ether_addr_copy(ar->mac_addr, pdev->mac_addr);
} else {
if (is_zero_ether_addr(mac_addr))
ether_addr_copy(ar->mac_addr, ab->mac_addr);
else
ether_addr_copy(ar->mac_addr, mac_addr);
ar->mac_addr[4] += i;
}