linux-kernel - [PATCH 4.19 236/243] mwifiex: update set_mac

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Message-Id: <20191211150355.265549381@linuxfoundation.org>
Date:   Wed, 11 Dec 2019 16:06:38 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sharvari Harisangam <sharvari@...vell.com>,
        Ganapathi Bhat <gbhat@...vell.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Brian Norris <briannorris@...gle.com>
Subject: [PATCH 4.19 236/243] mwifiex: update set_mac_address logic

From: Sharvari Harisangam <sharvari@...vell.com>

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@...vell.com>
Signed-off-by: Ganapathi Bhat <gbhat@...vell.com>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Cc: Brian Norris <briannorris@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 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;