Commit b2df8a1b authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Marc Kleine-Budde
Browse files

can: ucan: 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/214
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html


Signed-off-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/all/YzIdHDdz30BH4SAv@work


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 1dd1b521

drivers/net/can/usb/ucan.c

+2 −1
Original line number Diff line number Diff line
@@ -245,7 +245,8 @@ struct ucan_message_in { 
		/* CAN transmission complete

		 * (type == UCAN_IN_TX_COMPLETE)

		 */

		struct ucan_tx_complete_entry_t can_tx_complete_msg[0];

		DECLARE_FLEX_ARRAY(struct ucan_tx_complete_entry_t,

				   can_tx_complete_msg);

	} __aligned(0x4) msg;

} __packed __aligned(0x4);