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Message-ID: <YzIdHDdz30BH4SAv@work> Date: Mon, 26 Sep 2022 16:43:56 -0500 From: "Gustavo A. R. Silva" <gustavoars@...nel.org> To: Wolfgang Grandegger <wg@...ndegger.com>, Marc Kleine-Budde <mkl@...gutronix.de>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: linux-can@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, "Gustavo A. R. Silva" <gustavoars@...nel.org>, linux-hardening@...r.kernel.org Subject: [PATCH][next] 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: Gustavo A. R. Silva <gustavoars@...nel.org> --- drivers/net/can/usb/ucan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/can/usb/ucan.c b/drivers/net/can/usb/ucan.c index 7c35f50fda4e..b53e709943bc 100644 --- a/drivers/net/can/usb/ucan.c +++ b/drivers/net/can/usb/ucan.c @@ -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); -- 2.34.1
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