staging: rtl8723bs: use ether_addr_copy() for MAC address copying

Replaces multiple memcpy() calls with ether_addr_copy() for copying
MAC/Ethernet addresses in rtl8723bs. This improves readability and
aligns with Linux kernel best practices for handling Ethernet addresses.

Fixes the following checkpatch.pl warning:
"Use ether_addr_copy() instead of memcpy() for Ethernet addresses."

These updates enhance code clarity and maintain consistency with
network driver conventions.

Signed-off-by: Dharanitharan R <dharanitharan725@gmail.com>
Link: https://patch.msgid.link/20251023145903.2557-1-dharanitharan725@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: DharaniTharan-725

drivers/staging/rtl8723bs/hal/rtl8723b_cmd.c

@@ -7,6 +7,7 @@
 
 #include <drv_types.h>
 #include <rtl8723b_hal.h>
+#include <linux/etherdevice.h>
 #include "hal_com_h2c.h"
 
 #define MAX_H2C_BOX_NUMS	4
@@ -117,8 +118,8 @@ static void ConstructBeacon(struct adapter *padapter, u8 *pframe, u32 *pLength)
 	*(fctrl) = 0;
 
 	eth_broadcast_addr(pwlanhdr->addr1);
-	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, get_my_bssid(cur_network), ETH_ALEN);
+	ether_addr_copy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)));
+	ether_addr_copy(pwlanhdr->addr3, get_my_bssid(cur_network));
 
 	SetSeqNum(pwlanhdr, 0/*pmlmeext->mgnt_seq*/);
 	/* pmlmeext->mgnt_seq++; */
@@ -209,10 +210,10 @@ static void ConstructPSPoll(struct adapter *padapter, u8 *pframe, u32 *pLength)
 	SetDuration(pframe, (pmlmeinfo->aid | 0xc000));
 
 	/*  BSSID. */
-	memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+	ether_addr_copy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)));
 
 	/*  TA. */
-	memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
+	ether_addr_copy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)));
 
 	*pLength = 16;
 }
@@ -246,21 +247,21 @@ static void ConstructNullFunctionData(
 	switch (cur_network->network.infrastructure_mode) {
 	case Ndis802_11Infrastructure:
 		SetToDs(fctrl);
-		memcpy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
-		memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-		memcpy(pwlanhdr->addr3, StaAddr, ETH_ALEN);
+		ether_addr_copy(pwlanhdr->addr1, get_my_bssid(&(pmlmeinfo->network)));
+		ether_addr_copy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)));
+		ether_addr_copy(pwlanhdr->addr3, StaAddr);
 		break;
 	case Ndis802_11APMode:
 		SetFrDs(fctrl);
-		memcpy(pwlanhdr->addr1, StaAddr, ETH_ALEN);
-		memcpy(pwlanhdr->addr2, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
-		memcpy(pwlanhdr->addr3, myid(&(padapter->eeprompriv)), ETH_ALEN);
+		ether_addr_copy(pwlanhdr->addr1, StaAddr);
+		ether_addr_copy(pwlanhdr->addr2, get_my_bssid(&(pmlmeinfo->network)));
+		ether_addr_copy(pwlanhdr->addr3, myid(&(padapter->eeprompriv)));
 		break;
 	case Ndis802_11IBSS:
 	default:
-		memcpy(pwlanhdr->addr1, StaAddr, ETH_ALEN);
-		memcpy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)), ETH_ALEN);
-		memcpy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)), ETH_ALEN);
+		ether_addr_copy(pwlanhdr->addr1, StaAddr);
+		ether_addr_copy(pwlanhdr->addr2, myid(&(padapter->eeprompriv)));
+		ether_addr_copy(pwlanhdr->addr3, get_my_bssid(&(pmlmeinfo->network)));
 		break;
 	}
 
@@ -765,9 +766,9 @@ static void ConstructBtNullFunctionData(
 		SetPwrMgt(fctrl);
 
 	SetFrDs(fctrl);
-	memcpy(pwlanhdr->addr1, StaAddr, ETH_ALEN);
-	memcpy(pwlanhdr->addr2, myid(&padapter->eeprompriv), ETH_ALEN);
-	memcpy(pwlanhdr->addr3, myid(&padapter->eeprompriv), ETH_ALEN);
+	ether_addr_copy(pwlanhdr->addr1, StaAddr);
+	ether_addr_copy(pwlanhdr->addr2, myid(&padapter->eeprompriv));
+	ether_addr_copy(pwlanhdr->addr3, myid(&padapter->eeprompriv));
 
 	SetDuration(pwlanhdr, 0);
 	SetSeqNum(pwlanhdr, 0);