[PATCH 4/5] staging: r8188eu: simplify the checks for zero address

[Martin Kaiser]

In function ap2sta_data_frame, we can use is_zero_ether_addr to check for
all-zero ethernet addresses. Both pattrib->bssid and mybssid are 16-bit
aligned.

Signed-off-by: Martin Kaiser <martin@xxxxxxxxx>
---
 drivers/staging/r8188eu/core/rtw_recv.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_recv.c b/drivers/staging/r8188eu/core/rtw_recv.c
index 5b0a66aebff1..631c500dda42 100644
--- a/drivers/staging/r8188eu/core/rtw_recv.c
+++ b/drivers/staging/r8188eu/core/rtw_recv.c
@@ -779,9 +779,8 @@ static int ap2sta_data_frame(
 		}
 
 		/*  check BSSID */
-		if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
-		    !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
-		     (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
+		if (is_zero_ether_addr(pattrib->bssid) || is_zero_ether_addr(mybssid) ||
+		    (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
 			if (!bmcast)
 				issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
 
-- 
2.30.2