net/macmace: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

Since zero-length arrays are deprecated, we are replacing
them with C99 flexible-array members. As a result, instead
of declaring a zero-length array, use the new
DECLARE_FLEX_ARRAY() helper macro.

This fixes warnings such as:
./drivers/net/ethernet/apple/macmace.c:80:4-8: 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@gmail.com>
Link: https://lore.kernel.org/r/20230730231442.15003-1-rauji.raut@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/apple/macmace.c b/drivers/net/ethernet/apple/macmace.c
index 8fcaf16399201733a26b0e4bb0f16fe36c1740bc..8775c3234e91f702d393cc7e914f7ed200adf418 100644 (file)
--- a/drivers/net/ethernet/apple/macmace.c
+++ b/drivers/net/ethernet/apple/macmace.c
@@ -77,7 +77,7 @@ struct mace_frame {
        u8      pad4;
        u32     pad5;
        u32     pad6;
-       u8      data[1];
+       DECLARE_FLEX_ARRAY(u8, data);
        /* And frame continues.. */
 };