[PATCH rtw-next] wifi: rtw88: 8814a: add __packed to ensure efuse map size

[Ping-Ke Shih <pkshih@realtek.com>]

All nested sture/union used by efuse map should be packed. Otherwise, a
arm-linux-gnueabi-gcc compiler might throw errors due to size assertion.

   In file included from include/linux/bitfield.h:10,
                    from include/linux/fortify-string.h:5,
                    from include/linux/string.h:389,
                    from include/linux/uuid.h:11,
                    from include/linux/mod_devicetable.h:14,
                    from include/linux/usb.h:5,
                    from drivers/net/wireless/realtek/rtw88/rtw8814a.c:5:
>> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct rtw8814a_efuse) == 512"
    #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
                                            ^~~~~~~~~~~~~~

Fixes: 1a7545784642 ("wifi: rtw88: Add rtw8814a.{c,h}")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202604101721.fsv5XmCX-lkp@intel.com/
Cc: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw88/main.h     | 2 +-
 drivers/net/wireless/realtek/rtw88/rtw8814a.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index 9c0b746540b0..3cc7c2666c1c 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -471,7 +471,7 @@ struct rtw_2g_txpwr_idx {
 	struct rtw_2g_ns_pwr_idx_diff ht_2s_diff;
 	struct rtw_2g_ns_pwr_idx_diff ht_3s_diff;
 	struct rtw_2g_ns_pwr_idx_diff ht_4s_diff;
-};
+} __packed;
 
 struct rtw_5g_ht_1s_pwr_idx_diff {
 #ifdef __LITTLE_ENDIAN
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8814a.h b/drivers/net/wireless/realtek/rtw88/rtw8814a.h
index c57c7c8f915e..a0d9446e2043 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8814a.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8814a.h
@@ -51,7 +51,7 @@ struct rtw8814a_efuse {
 	union {
 		struct rtw8814au_efuse u;
 		struct rtw8814ae_efuse e;
-	};
+	} __packed;
 	u8 res5[0x122];			/* 0xde */
 } __packed;
 

base-commit: 929298742bb5dfacd53ea99cf989cc81210f90a3
-- 
2.25.1