linux-kernel - [PATCH] staging: r8188eu: fall back to random mac address

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Message-Id: <20220713075552.140927-1-martin@kaiser.cx>
Date:   Wed, 13 Jul 2022 09:55:52 +0200
From:   Martin Kaiser <martin@...ser.cx>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Michael Straube <straube.linux@...il.com>,
        Pavel Skripkin <paskripkin@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Martin Kaiser <martin@...ser.cx>, Joe Perches <joe@...ches.com>
Subject: [PATCH] staging: r8188eu: fall back to random mac address

Call eth_random_addr to generate a random mac address if we cannot load
the mac address from the efuses.

Do not use a constant mac address as fallback. This may create conflicts
if we have several r8188eu devices on the network.

Suggested-by: Joe Perches <joe@...ches.com>
Signed-off-by: Martin Kaiser <martin@...ser.cx>
---
 drivers/staging/r8188eu/hal/usb_halinit.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/r8188eu/hal/usb_halinit.c b/drivers/staging/r8188eu/hal/usb_halinit.c
index 68d012a442a8..8902dda7b8d8 100644
--- a/drivers/staging/r8188eu/hal/usb_halinit.c
+++ b/drivers/staging/r8188eu/hal/usb_halinit.c
@@ -912,11 +912,10 @@ unsigned int rtl8188eu_inirp_init(struct adapter *Adapter)
 
 static void Hal_EfuseParseMACAddr_8188EU(struct adapter *adapt, u8 *hwinfo, bool AutoLoadFail)
 {
-	u8 sMacAddr[6] = {0x00, 0xE0, 0x4C, 0x81, 0x88, 0x02};
 	struct eeprom_priv *eeprom = &adapt->eeprompriv;
 
 	if (AutoLoadFail) {
-		memcpy(eeprom->mac_addr, sMacAddr, ETH_ALEN);
+		eth_random_addr(eeprom->mac_addr);
 	} else {
 		/* Read Permanent MAC address */
 		memcpy(eeprom->mac_addr, &hwinfo[EEPROM_MAC_ADDR_88EU], ETH_ALEN);
-- 
2.30.2