staging: rtl8723bs: remove custom is_multicast_mac_addr() function

is_multicast_mac_addr() is redundant reimplementation of standard
is_multicast_ether_addr() func.
Remove it and switch to use is_multicast_ether_addr().

Signed-off-by: Nikolay Kulikov <nikolayof23@gmail.com>
Link: https://patch.msgid.link/20260323150650.7168-7-nikolayof23@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: nikolayof12

drivers/staging/rtl8723bs/core/rtw_ioctl_set.c

@@ -13,7 +13,7 @@ u8 rtw_validate_bssid(u8 *bssid)
 
 	if (is_zero_ether_addr(bssid) ||
 	    is_broadcast_ether_addr(bssid) ||
-	    is_multicast_mac_addr(bssid))
+	    is_multicast_ether_addr(bssid))
 		ret = false;
 
 	return ret;

drivers/staging/rtl8723bs/core/rtw_recv.c

@@ -1275,7 +1275,7 @@ static signed int validate_recv_mgnt_frame(struct adapter *padapter, union recv_
 			    ETH_ALEN))
 			psta->sta_stats.rx_probersp_pkts++;
 		else if (is_broadcast_ether_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)) ||
-			 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
+			 is_multicast_ether_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
 			psta->sta_stats.rx_probersp_bm_pkts++;
 		else
 			psta->sta_stats.rx_probersp_uo_pkts++;

drivers/staging/rtl8723bs/include/ieee80211.h

@@ -507,11 +507,6 @@ Total: 28-2340 bytes
 #define DEFAULT_FTS 2346
 #define IP_ARG(x) (x)
 
-static inline int is_multicast_mac_addr(const u8 *addr)
-{
-	return ((addr[0] != 0xff) && (0x01 & addr[0]));
-}
-
 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)