linux-kernel - [PATCH 18/22] nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX

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Date:   Mon, 14 Aug 2023 17:52:48 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org, Atul Raut <rauji.raut@...il.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH 18/22] nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

From: Atul Raut <rauji.raut@...il.com>

We are moving toward replacing zero-length arrays with C99 flexible-array
members since they are deprecated. Therefore, the new DECLARE_FLEX_ARRAY()
helper macro should be used to replace the zero-length array declaration.

This fixes warnings such as:
./drivers/nvmem/u-boot-env.c:50:9-13: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

Signed-off-by: Atul Raut <rauji.raut@...il.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 drivers/nvmem/u-boot-env.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvmem/u-boot-env.c b/drivers/nvmem/u-boot-env.c
index 80c5382b361c..c4ae94af4af7 100644
--- a/drivers/nvmem/u-boot-env.c
+++ b/drivers/nvmem/u-boot-env.c
@@ -47,7 +47,7 @@ struct u_boot_env_image_broadcom {
 	__le32 magic;
 	__le32 len;
 	__le32 crc32;
-	uint8_t data[0];
+	DECLARE_FLEX_ARRAY(uint8_t, data);
 } __packed;
 
 static int u_boot_env_read(void *context, unsigned int offset, void *val,
-- 
2.25.1