Subject: [PATCH][next] net: ethernet: rmnet: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

From: "Gustavo A. R. Silva" <[email-masked]>
Date: Mon, 26 Sep 2022 16:50:03 -0500

Zero-length arrays are deprecated and we are moving towards adopting
C99 flexible-array members, instead. So, replace zero-length arrays
declarations in anonymous union with the new DECLARE_FLEX_ARRAY()
helper macro.

This helper allows for flexible-array members in unions.

Link: https://github.com/KSPP/linux/issues/193
Link: https://github.com/KSPP/linux/issues/221
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Signed-off-by: Gustavo A. R. Silva <[email-masked]>
---
 drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
index e5a0b38f7dbe..2b033060fc20 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
@@ -19,7 +19,7 @@ struct rmnet_map_control_command {
 			__be16 flow_control_seq_num;
 			__be32 qos_id;
 		} flow_control;
-		u8 data[0];
+		DECLARE_FLEX_ARRAY(u8, data);
 	};
 }  __aligned(1);
 
-- 
2.34.1