linux-hardening - [PATCH 2/3] wifi: mwifiex: Replace one-element array with flexible-array member in struct mwifiex_ie_types_rxba

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Date:   Wed, 23 Aug 2023 16:32:06 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Brian Norris <briannorris@...omium.org>,
        Kalle Valo <kvalo@...nel.org>,
        Amitkumar Karwar <akarwar@...vell.com>,
        Xinming Hu <huxm@...vell.com>, Dan Williams <dcbw@...hat.com>
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 2/3] wifi: mwifiex: Replace one-element array with
 flexible-array member in struct mwifiex_ie_types_rxba_sync

One-element and zero-length arrays are deprecated. So, replace
one-element array in struct mwifiex_ie_types_rxba_sync with
flexible-array member, and refactor the rest of the code, accordingly.

This results in no differences in binary output.

Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c | 2 +-
 drivers/net/wireless/marvell/mwifiex/fw.h            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
index d1d3632a3ed7..735aac52bdc4 100644
--- a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
+++ b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c
@@ -918,7 +918,7 @@ void mwifiex_11n_rxba_sync_event(struct mwifiex_private *priv,
 
 	mwifiex_dbg_dump(priv->adapter, EVT_D, "RXBA_SYNC event:",
 			 event_buf, len);
-	while (tlv_buf_left >= sizeof(*tlv_rxba)) {
+	while (tlv_buf_left > sizeof(*tlv_rxba)) {
 		tlv_type = le16_to_cpu(tlv_rxba->header.type);
 		tlv_len  = le16_to_cpu(tlv_rxba->header.len);
 		if (tlv_type != TLV_TYPE_RXBA_SYNC) {
diff --git a/drivers/net/wireless/marvell/mwifiex/fw.h b/drivers/net/wireless/marvell/mwifiex/fw.h
index f2168fac95ed..8e6db904e5b2 100644
--- a/drivers/net/wireless/marvell/mwifiex/fw.h
+++ b/drivers/net/wireless/marvell/mwifiex/fw.h
@@ -779,7 +779,7 @@ struct mwifiex_ie_types_rxba_sync {
 	u8 reserved;
 	__le16 seq_num;
 	__le16 bitmap_len;
-	u8 bitmap[1];
+	u8 bitmap[];
 } __packed;
 
 struct chan_band_param_set {
-- 
2.34.1