| Message ID | 20241218074552.3271542-1-zhangkunbo@huawei.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [-next] wifi: mt76: mt7925:: replace zero-length array with flexible-array member | expand |
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c index 748ea6adbc6b..956d62062730 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c @@ -388,7 +388,7 @@ mt7925_mcu_tx_done_event(struct mt792x_dev *dev, struct sk_buff *skb) struct mt7925_mcu_txs_event { u8 ver; u8 rsv[3]; - u8 data[0]; + u8 data[]; } __packed * txs; struct tlv *tlv; u32 tlv_len;
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last, which is beneficial to cultivate a high-quality code.[2] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Zhang Kunbo <zhangkunbo@huawei.com> --- drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)