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Date:   Mon, 26 Sep 2022 18:01:08 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH][next] soc: qcom: smd-rpm: 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/224
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/soc/qcom/smd-rpm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/smd-rpm.c b/drivers/soc/qcom/smd-rpm.c
index 413f9f4ae9cd..125cb456a5dc 100644
--- a/drivers/soc/qcom/smd-rpm.c
+++ b/drivers/soc/qcom/smd-rpm.c
@@ -75,7 +75,7 @@ struct qcom_rpm_message {
 	__le32 length;
 	union {
 		__le32 msg_id;
-		u8 message[0];
+		DECLARE_FLEX_ARRAY(u8, message);
 	};
 };
 
-- 
2.34.1

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