On Mon, 17 Jul 2023 12:06:38 +0800 Matt Johnston wrote:

+/* Returns the 48 bit Provisioned Id from an i3c_device_info.pid */
+static void pid_to_addr(u64 pid, u8 addr[PID_SIZE])
+{
+	pid = cpu_to_be64(pid);
+	memcpy(addr, ((u8 *)&pid) + 2, PID_SIZE);
+}

put_unaligned_be48() ? That or you need a local variable or something,
because otherwise sparse is not happy (build test with C=1).