linux-hardening - [PATCH][next] wifi: ti: Avoid a hundred -Wflex-array-member-not-at-end warnings

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Message-ID: <ZgDcwIgxkhs6ZVdY@neat>
Date: Sun, 24 Mar 2024 20:09:04 -0600
From: "Gustavo A. R. Silva" <gustavoars@...nel.org>
To: Kalle Valo <kvalo@...nel.org>
Cc: linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@...nel.org>,
	linux-hardening@...r.kernel.org
Subject: [PATCH][next] wifi: ti: Avoid a hundred
 -Wflex-array-member-not-at-end warnings

-Wflex-array-member-not-at-end is coming in GCC-14, and we are getting
ready to enable it globally.

Remove unused flexible-array members in multiple structures, and fix
a hundred -Wflex-array-member-not-at-end warnings[1] in
drivers/wireless/ti/

Link: https://gist.github.com/GustavoARSilva/fbf63c114d01319bbd19baf95b4d704b [1]
Link: https://github.com/KSPP/linux/issues/202
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/net/wireless/ti/wl1251/cmd.h          | 2 --
 drivers/net/wireless/ti/wl1251/wl12xx_80211.h | 1 -
 drivers/net/wireless/ti/wlcore/cmd.h          | 2 --
 drivers/net/wireless/ti/wlcore/wl12xx_80211.h | 1 -
 4 files changed, 6 deletions(-)

diff --git a/drivers/net/wireless/ti/wl1251/cmd.h b/drivers/net/wireless/ti/wl1251/cmd.h
index e5874186f9d7..39159201b97e 100644
--- a/drivers/net/wireless/ti/wl1251/cmd.h
+++ b/drivers/net/wireless/ti/wl1251/cmd.h
@@ -89,8 +89,6 @@ enum wl1251_commands {
 struct wl1251_cmd_header {
 	u16 id;
 	u16 status;
-	/* payload */
-	u8 data[];
 } __packed;
 
 struct  wl1251_command {
diff --git a/drivers/net/wireless/ti/wl1251/wl12xx_80211.h b/drivers/net/wireless/ti/wl1251/wl12xx_80211.h
index 7e28fe435b43..3d5b0df5b231 100644
--- a/drivers/net/wireless/ti/wl1251/wl12xx_80211.h
+++ b/drivers/net/wireless/ti/wl1251/wl12xx_80211.h
@@ -65,7 +65,6 @@ struct ieee80211_header {
 	u8 sa[ETH_ALEN];
 	u8 bssid[ETH_ALEN];
 	__le16 seq_ctl;
-	u8 payload[];
 } __packed;
 
 struct wl12xx_ie_header {
diff --git a/drivers/net/wireless/ti/wlcore/cmd.h b/drivers/net/wireless/ti/wlcore/cmd.h
index f2609d5b6bf7..4c2f2608ef3b 100644
--- a/drivers/net/wireless/ti/wlcore/cmd.h
+++ b/drivers/net/wireless/ti/wlcore/cmd.h
@@ -208,8 +208,6 @@ enum cmd_templ {
 struct wl1271_cmd_header {
 	__le16 id;
 	__le16 status;
-	/* payload */
-	u8 data[];
 } __packed;
 
 #define WL1271_CMD_MAX_PARAMS 572
diff --git a/drivers/net/wireless/ti/wlcore/wl12xx_80211.h b/drivers/net/wireless/ti/wlcore/wl12xx_80211.h
index 1dd7ecc11f86..602915c4da26 100644
--- a/drivers/net/wireless/ti/wlcore/wl12xx_80211.h
+++ b/drivers/net/wireless/ti/wlcore/wl12xx_80211.h
@@ -66,7 +66,6 @@ struct ieee80211_header {
 	u8 sa[ETH_ALEN];
 	u8 bssid[ETH_ALEN];
 	__le16 seq_ctl;
-	u8 payload[];
 } __packed;
 
 struct wl12xx_ie_header {
-- 
2.34.1