wifi: brcmfmac: Add brcmf_c_set_cur_etheraddr() helper

Add a little helper to send "cur_etheraddr" commands to the interface
and to handle the error reporting of it in a single place.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Arend van Spriel <aspriel@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220708133712.102179-1-hdegoede@redhat.com

drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c

@@ -190,6 +190,17 @@ static int brcmf_c_process_clm_blob(struct brcmf_if *ifp)
 	return err;
 }
 
+int brcmf_c_set_cur_etheraddr(struct brcmf_if *ifp, const u8 *addr)
+{
+	s32 err;
+
+	err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", addr, ETH_ALEN);
+	if (err < 0)
+		bphy_err(ifp->drvr, "Setting cur_etheraddr failed, %d\n", err);
+
+	return err;
+}
+
 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
 {
 	struct brcmf_pub *drvr = ifp->drvr;
@@ -204,12 +215,9 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
 
 	if (is_valid_ether_addr(ifp->mac_addr)) {
 		/* set mac address */
-		err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr,
-					       ETH_ALEN);
-		if (err < 0) {
-			bphy_err(ifp->drvr, "Setting cur_etheraddr failed, %d\n", err);
+		err = brcmf_c_set_cur_etheraddr(ifp, ifp->mac_addr);
+		if (err < 0)
 			goto done;
-		}
 	} else {
 		/* retrieve mac address */
 		err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr,

drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h

@@ -65,6 +65,7 @@ void brcmf_release_module_param(struct brcmf_mp_device *module_param);
 
 /* Sets dongle media info (drv_version, mac address). */
 int brcmf_c_preinit_dcmds(struct brcmf_if *ifp);
+int brcmf_c_set_cur_etheraddr(struct brcmf_if *ifp, const u8 *addr);
 
 #ifdef CONFIG_DMI
 void brcmf_dmi_probe(struct brcmf_mp_device *settings, u32 chip, u32 chiprev);

drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c

@@ -233,16 +233,12 @@ static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
 {
 	struct brcmf_if *ifp = netdev_priv(ndev);
 	struct sockaddr *sa = (struct sockaddr *)addr;
-	struct brcmf_pub *drvr = ifp->drvr;
 	int err;
 
 	brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx);
 
-	err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", sa->sa_data,
-				       ETH_ALEN);
-	if (err < 0) {
-		bphy_err(drvr, "Setting cur_etheraddr failed, %d\n", err);
-	} else {
+	err = brcmf_c_set_cur_etheraddr(ifp, sa->sa_data);
+	if (err >= 0) {
 		brcmf_dbg(TRACE, "updated to %pM\n", sa->sa_data);
 		memcpy(ifp->mac_addr, sa->sa_data, ETH_ALEN);
 		eth_hw_addr_set(ifp->ndev, ifp->mac_addr);