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net: ethernet: rmnet: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

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 <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

authored by

Gustavo A. R. Silva and committed by
David S. Miller c87e4ad1 8fff09ef

+1 -1
+1 -1
drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
··· 19 19 __be16 flow_control_seq_num; 20 20 __be32 qos_id; 21 21 } flow_control; 22 - u8 data[0]; 22 + DECLARE_FLEX_ARRAY(u8, data); 23 23 }; 24 24 } __aligned(1); 25 25