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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Mar 20, 2023 at 01:26:49PM -0600, Gustavo A. R. Silva wrote: > On Mon, Mar 20, 2023 at 03:56:54PM +0100, Simon Horman wrote: > > > struct mt7921_asar_cl { > > > @@ -85,7 +85,7 @@ struct mt7921_asar_fg { > > > u8 rsvd; > > > u8 nr_flag; > > > u8 rsvd1; > > > - u8 flag[0]; > > > + u8 flag[]; > > > > I am curious to know why DECLARE_FLEX_ARRAY isn't used here. > > In contrast to the other structs, there is no object of type struct > mt7921_asar_fg declared in a union: > > 91 struct mt7921_acpi_sar { > 92 u8 ver; > 93 union { > 94 struct mt7921_asar_dyn *dyn; > 95 struct mt7921_asar_dyn_v2 *dyn_v2; > 96 }; > 97 union { > 98 struct mt7921_asar_geo *geo; > 99 struct mt7921_asar_geo_v2 *geo_v2; > 100 }; > 101 struct mt7921_asar_cl *countrylist; > 102 struct mt7921_asar_fg *fg; > 103 }; > > The DECLARE_FLEX_ARRAY() helper was created to declare flex-array members > in unions or alone in structs[1]. Thanks for the clarification, much appreciated. FWIIW, with this information I'm happy with this patch. Reviewed-by: Simon Horman _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel