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[next] ath10k: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper

Message ID YzIcoloIQBDqGlgc@work (mailing list archive)
State Mainlined
Commit 00d942e779c24581932125a58d8b9a2938e9e7ce
Headers show
Series [next] ath10k: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper | expand

Commit Message

Gustavo A. R. Silva Sept. 26, 2022, 9:41 p.m. UTC
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/212
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
 drivers/net/wireless/ath/ath10k/htt.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Comments

Kees Cook Sept. 26, 2022, 10 p.m. UTC | #1
On Mon, Sep 26, 2022 at 04:41:54PM -0500, Gustavo A. R. Silva wrote:
> 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/212
> 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>
Kalle Valo Sept. 28, 2022, 7:45 a.m. UTC | #2
"Gustavo A. R. Silva" <gustavoars@kernel.org> wrote:

> 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/212
> 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: Kalle Valo <quic_kvalo@quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

00d942e779c2 wifi: ath10k: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h
index f06cf39204e2..c051a22fce14 100644
--- a/drivers/net/wireless/ath/ath10k/htt.h
+++ b/drivers/net/wireless/ath/ath10k/htt.h
@@ -1108,8 +1108,10 @@  struct htt_rx_in_ord_ind {
 	u8 reserved;
 	__le16 msdu_count;
 	union {
-		struct htt_rx_in_ord_msdu_desc msdu_descs32[0];
-		struct htt_rx_in_ord_msdu_desc_ext msdu_descs64[0];
+		DECLARE_FLEX_ARRAY(struct htt_rx_in_ord_msdu_desc,
+				   msdu_descs32);
+		DECLARE_FLEX_ARRAY(struct htt_rx_in_ord_msdu_desc_ext,
+				   msdu_descs64);
 	} __packed;
 } __packed;