[PATCH 4.19 236/243] mwifiex: update set_mac_address logic

From: Greg Kroah-Hartman
Date: Wed Dec 11 2019 - 10:26:51 EST


From: Sharvari Harisangam <sharvari@xxxxxxxxxxx>

commit 7afb94da3cd8a28ed7ae268143117bf1ac8a3371 upstream.

In set_mac_address, driver check for interfaces with same bss_type
For first STA entry, this would return 3 interfaces since all priv's have
bss_type as 0 due to kzalloc. Thus mac address gets changed for STA
unexpected. This patch adds check for first STA and avoids mac address
change. This patch also adds mac_address change for p2p based on bss_num
type.

Signed-off-by: Sharvari Harisangam <sharvari@xxxxxxxxxxx>
Signed-off-by: Ganapathi Bhat <gbhat@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Cc: Brian Norris <briannorris@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/net/wireless/marvell/mwifiex/main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -960,10 +960,10 @@ int mwifiex_set_mac_address(struct mwifi

mac_addr = old_mac_addr;

- if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P)
+ if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
-
- if (mwifiex_get_intf_num(priv->adapter, priv->bss_type) > 1) {
+ mac_addr += priv->bss_num;
+ } else if (priv->adapter->priv[0] != priv) {
/* Set mac address based on bss_type/bss_num */
mac_addr ^= BIT_ULL(priv->bss_type + 8);
mac_addr += priv->bss_num;