[openwrt/openwrt] ramips: fix Wifi MAC address setup for D-Link DIR-853 R1

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/3ac13416ca67908a691d3ae3c9b08623a56e9c60

commit 3ac13416ca67908a691d3ae3c9b08623a56e9c60
Author: Adrian Schmutzler <freifunk at adrianschmutzler.de>
AuthorDate: Sun Jul 11 15:19:47 2021 +0200

    ramips: fix Wifi MAC address setup for D-Link DIR-853 R1
    
    Commands in 10_fix_wifi_mac were not properly concatenated, so
    this was also triggered for the second phy without giving a
    MAC address as argument.
    
    Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
 .../mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac       | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
index 4349a3592d..711af4e3af 100644
--- a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
+++ b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
@@ -16,10 +16,10 @@ case "$board" in
 				> /sys${DEVPATH}/macaddress
 		;;
 	dlink,dir-853-r1)
-		[ "$PHYNBR" = "0" ] && \
-			base_mac=$(mtd_get_mac_binary factory 0x4)
-			base_mac=$(macaddr_add "$base_mac" -1)
+		if [ "$PHYNBR" = "0" ]; then
+			base_mac=$(macaddr_add "$(mtd_get_mac_binary factory 0x4)" -1)
 			macaddr_setbit_la "$base_mac" > /sys${DEVPATH}/macaddress
+		fi
 		;;
 	glinet,gl-mt1300)
 		[ "$PHYNBR" = "1" ] && \