wifi: mt76: mt7996: fix mt7996_mcu_all_sta_info_event struct packing

[ Upstream commit 2ee1c40daeb9a33e25c460bf87feca58e91af879 ]

The internal struct and union inside mt7996_mcu_all_sta_info_event is
marked as being aligned, which conflicts with it being unaligned
within that structure:

drivers/net/wireless/mediatek/mt76/mt7996/mcu.h:165:2: error: field  within 'struct mt7996_mcu_all_sta_info_event' is less aligned than 'union mt7996_mcu_all_sta_info_event::(anonymous at ../drivers/net/wireless/mediatek/mt76/mt7996/mcu.h:165:2)' and is usually due to 'struct mt7996_mcu_all_sta_info_event' being packed, which can lead to unaligned accesses [-Werror,-Wunaligned-access]

Mark all three as being packed as well to ensure byte packing for
the entire thing.

Fixes: adde3eed4a75 ("wifi: mt76: mt7996: Add mcu commands for getting sta tx statistic")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
index 14c0dd31387a2cd14fd227fc1a0a5e734c84a8c4..9300cd8eeb76bf52960cbd6149200f09b0db5842 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
@@ -168,15 +168,15 @@ struct mt7996_mcu_all_sta_info_event {
                        u8 rsv[2];
                        __le32 tx_bytes[IEEE80211_NUM_ACS];
                        __le32 rx_bytes[IEEE80211_NUM_ACS];
-               } adm_stat[0];
+               } adm_stat[0] __packed;
 
                struct {
                        __le16 wlan_idx;
                        u8 rsv[2];
                        __le32 tx_msdu_cnt;
                        __le32 rx_msdu_cnt;
-               } msdu_cnt[0];
-       };
+               } msdu_cnt[0] __packed;
+       } __packed;
 } __packed;
 
 enum mt7996_chan_mib_offs {