From: Gustavo A. R. Silva <gustavoars@kernel.org>
Date: Mon, 26 Sep 2022 21:45:45 +0000 (-0500)
Subject: crypto: talitos - Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=224f3a050e495a7c3c1bcee2c613d0996bc661dc;p=linux.git

crypto: talitos - Replace zero-length arrays 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/216
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: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h
index 32825119e8805..1a93ee355929d 100644
--- a/drivers/crypto/talitos.h
+++ b/drivers/crypto/talitos.h
@@ -65,8 +65,8 @@ struct talitos_edesc {
 	dma_addr_t dma_link_tbl;
 	struct talitos_desc desc;
 	union {
-		struct talitos_ptr link_tbl[0];
-		u8 buf[0];
+		DECLARE_FLEX_ARRAY(struct talitos_ptr, link_tbl);
+		DECLARE_FLEX_ARRAY(u8, buf);
 	};
 };