openwrt_mitrastar/package/kernel/mac80211/patches/rtl/052-v6.14-wifi-rtw88-add-__packed-attribute-to-efuse-layout-st.patch

From 0daa521a1c8c29ffbefe6530f0d276e74e2749d0 Mon Sep 17 00:00:00 2001
From: Ping-Ke Shih <pkshih@realtek.com>
Date: Thu, 12 Dec 2024 13:42:03 +0800
Subject: [PATCH] wifi: rtw88: add __packed attribute to efuse layout struct

The layout struct of efuse should not do address alignment by compiler.
Otherwise it leads unexpected layout and size for certain arch suc as arm.
In x86-64, the results are identical before and after this patch.

Also adjust bit-field to prevent over adjacent byte to avoid warning:
  rtw88/rtw8822b.h:66:1: note: offset of packed bit-field `res2` has changed in GCC 4.4
   66 | } __packed;
      | ^

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202412120131.qk0x6OhE-lkp@intel.com/
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20241212054203.135046-1-pkshih@realtek.com
---
 drivers/net/wireless/realtek/rtw88/main.h     | 4 ++--
 drivers/net/wireless/realtek/rtw88/rtw8723x.h | 8 ++++----
 drivers/net/wireless/realtek/rtw88/rtw8821c.h | 9 +++++----
 drivers/net/wireless/realtek/rtw88/rtw8822b.h | 9 +++++----
 drivers/net/wireless/realtek/rtw88/rtw8822c.h | 9 +++++----
 5 files changed, 21 insertions(+), 18 deletions(-)

--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -510,12 +510,12 @@ struct rtw_5g_txpwr_idx {
 	struct rtw_5g_vht_ns_pwr_idx_diff vht_2s_diff;
 	struct rtw_5g_vht_ns_pwr_idx_diff vht_3s_diff;
 	struct rtw_5g_vht_ns_pwr_idx_diff vht_4s_diff;
-};
+} __packed;
 
 struct rtw_txpwr_idx {
 	struct rtw_2g_txpwr_idx pwr_idx_2g;
 	struct rtw_5g_txpwr_idx pwr_idx_5g;
-};
+} __packed;
 
 struct rtw_channel_params {
 	u8 center_chan;
--- a/drivers/net/wireless/realtek/rtw88/rtw8723x.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8723x.h
@@ -47,7 +47,7 @@ struct rtw8723xe_efuse {
 	u8 device_id[2];
 	u8 sub_vendor_id[2];
 	u8 sub_device_id[2];
-};
+} __packed;
 
 struct rtw8723xu_efuse {
 	u8 res4[48];                    /* 0xd0 */
@@ -56,12 +56,12 @@ struct rtw8723xu_efuse {
 	u8 usb_option;                  /* 0x104 */
 	u8 res5[2];			/* 0x105 */
 	u8 mac_addr[ETH_ALEN];          /* 0x107 */
-};
+} __packed;
 
 struct rtw8723xs_efuse {
 	u8 res4[0x4a];			/* 0xd0 */
 	u8 mac_addr[ETH_ALEN];		/* 0x11a */
-};
+} __packed;
 
 struct rtw8723x_efuse {
 	__le16 rtl_id;
@@ -96,7 +96,7 @@ struct rtw8723x_efuse {
 		struct rtw8723xu_efuse u;
 		struct rtw8723xs_efuse s;
 	};
-};
+} __packed;
 
 #define RTW8723X_IQK_ADDA_REG_NUM	16
 #define RTW8723X_IQK_MAC8_REG_NUM	3
--- a/drivers/net/wireless/realtek/rtw88/rtw8821c.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8821c.h
@@ -27,7 +27,7 @@ struct rtw8821cu_efuse {
 	u8 res11[0xcf];
 	u8 package_type;		/* 0x1fb */
 	u8 res12[0x4];
-};
+} __packed;
 
 struct rtw8821ce_efuse {
 	u8 mac_addr[ETH_ALEN];		/* 0xd0 */
@@ -47,7 +47,8 @@ struct rtw8821ce_efuse {
 	u8 ltr_en:1;
 	u8 res1:2;
 	u8 obff:2;
-	u8 res2:3;
+	u8 res2_1:1;
+	u8 res2_2:2;
 	u8 obff_cap:2;
 	u8 res3:4;
 	u8 res4[3];
@@ -63,7 +64,7 @@ struct rtw8821ce_efuse {
 	u8 res6:1;
 	u8 port_t_power_on_value:5;
 	u8 res7;
-};
+} __packed;
 
 struct rtw8821cs_efuse {
 	u8 res4[0x4a];			/* 0xd0 */
@@ -101,7 +102,7 @@ struct rtw8821c_efuse {
 		struct rtw8821cu_efuse u;
 		struct rtw8821cs_efuse s;
 	};
-};
+} __packed;
 
 static inline void
 _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
--- a/drivers/net/wireless/realtek/rtw88/rtw8822b.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822b.h
@@ -27,7 +27,7 @@ struct rtw8822bu_efuse {
 	u8 res11[0xcf];
 	u8 package_type;		/* 0x1fb */
 	u8 res12[0x4];
-};
+} __packed;
 
 struct rtw8822be_efuse {
 	u8 mac_addr[ETH_ALEN];		/* 0xd0 */
@@ -47,7 +47,8 @@ struct rtw8822be_efuse {
 	u8 ltr_en:1;
 	u8 res1:2;
 	u8 obff:2;
-	u8 res2:3;
+	u8 res2_1:1;
+	u8 res2_2:2;
 	u8 obff_cap:2;
 	u8 res3:4;
 	u8 res4[3];
@@ -63,7 +64,7 @@ struct rtw8822be_efuse {
 	u8 res6:1;
 	u8 port_t_power_on_value:5;
 	u8 res7;
-};
+} __packed;
 
 struct rtw8822bs_efuse {
 	u8 res4[0x4a];			/* 0xd0 */
@@ -103,7 +104,7 @@ struct rtw8822b_efuse {
 		struct rtw8822bu_efuse u;
 		struct rtw8822bs_efuse s;
 	};
-};
+} __packed;
 
 static inline void
 _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
--- a/drivers/net/wireless/realtek/rtw88/rtw8822c.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.h
@@ -14,7 +14,7 @@ struct rtw8822cu_efuse {
 	u8 res1[3];
 	u8 mac_addr[ETH_ALEN];		/* 0x157 */
 	u8 res2[0x3d];
-};
+} __packed;
 
 struct rtw8822cs_efuse {
 	u8 res0[0x4a];			/* 0x120 */
@@ -39,7 +39,8 @@ struct rtw8822ce_efuse {
 	u8 ltr_en:1;
 	u8 res1:2;
 	u8 obff:2;
-	u8 res2:3;
+	u8 res2_1:1;
+	u8 res2_2:2;
 	u8 obff_cap:2;
 	u8 res3:4;
 	u8 class_code[3];
@@ -55,7 +56,7 @@ struct rtw8822ce_efuse {
 	u8 res6:1;
 	u8 port_t_power_on_value:5;
 	u8 res7;
-};
+} __packed;
 
 struct rtw8822c_efuse {
 	__le16 rtl_id;
@@ -102,7 +103,7 @@ struct rtw8822c_efuse {
 		struct rtw8822cu_efuse u;
 		struct rtw8822cs_efuse s;
 	};
-};
+} __packed;
 
 enum rtw8822c_dpk_agc_phase {
 	RTW_DPK_GAIN_CHECK,