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authorBrian Norris <briannorris@chromium.org>2018-08-28 19:48:17 +0300
committerKalle Valo <kvalo@codeaurora.org>2018-09-03 19:53:18 +0300
commit9d5804662ce1f9bdde0a14c3c40940acbbf09538 (patch)
treef71677d974b3a69bbcd508fbb14a479ab69a89d2
parent9cac6a9b629739537d7792898cc0d401ae020205 (diff)
ath10k: 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 Wifi). Use the generic device helper to retrieve the MAC address, and (if present) honor it above the MAC address advertised by the card. Signed-off-by: Brian Norris <briannorris@chromium.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
-rw-r--r--drivers/net/wireless/ath/ath10k/core.c3
-rw-r--r--drivers/net/wireless/ath/ath10k/wmi.c3
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index ebc213884a9a..f5f71c02fc2b 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/firmware.h>
#include <linux/of.h>
+#include <linux/property.h>
#include <linux/dmi.h>
#include <linux/ctype.h>
#include <asm/byteorder.h>
@@ -2617,6 +2618,8 @@ static int ath10k_core_probe_fw(struct ath10k *ar)
ath10k_debug_print_board_info(ar);
}
+ device_get_mac_address(ar->dev, ar->mac_addr, sizeof(ar->mac_addr));
+
ret = ath10k_core_init_firmware_features(ar);
if (ret) {
ath10k_err(ar, "fatal problem with firmware features: %d\n",
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 40ce0e4006bc..212005cd0646 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -5455,7 +5455,8 @@ int ath10k_wmi_event_ready(struct ath10k *ar, struct sk_buff *skb)
arg.mac_addr,
__le32_to_cpu(arg.status));
- ether_addr_copy(ar->mac_addr, arg.mac_addr);
+ if (is_zero_ether_addr(ar->mac_addr))
+ ether_addr_copy(ar->mac_addr, arg.mac_addr);
complete(&ar->wmi.unified_ready);
return 0;
}