On Tue, 14 Jan 2025 02:19:08 +0100 Andrew Lunn wrote: > > @@ -50,6 +50,10 @@ struct fbnic_fw_completion { > > struct kref ref_count; > > int result; > > union { > > + struct { > > + s32 millivolts; > > + s32 millidegrees; > > + } tsene; > > } u; > > }; > > Why have a union which only has one member? One member per command, the commit msg on patch 1 mentions: The data from the various response types will be added to the "union u" by subsequent commits. More commands are on the way. It's a coin toss whether it's better to add the union later or have to re-indent already added structs.