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Date:   Mon, 26 Sep 2022 16:46:24 -0500
From:   "Gustavo A. R. Silva" <>
To:     Vinod Koul <>
        "Gustavo A. R. Silva" <>,
Subject: [PATCH][next] dmaengine: sh: rcar-dmac: 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.

Signed-off-by: Gustavo A. R. Silva <>
 drivers/dma/sh/rcar-dmac.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 13d12d660cc2..641d689d17ff 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -103,8 +103,8 @@ struct rcar_dmac_desc_page {
 	struct list_head node;
 	union {
-		struct rcar_dmac_desc descs[0];
-		struct rcar_dmac_xfer_chunk chunks[0];
+		DECLARE_FLEX_ARRAY(struct rcar_dmac_desc, descs);
+		DECLARE_FLEX_ARRAY(struct rcar_dmac_xfer_chunk, chunks);

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