help please first module

[hinawa]

hello i am starting to write modules and this code does not compile

hello.c:

/********************

  Modulo experimental

********************/*

#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alberto Cerezo <ac90869 at gmail.com>");
MODULE_DESCRIPTION("\"Hola Mundo\" Modulo experimental");
MODULE_VERSION("printk");

static int __init hola_init(void)
{
	printk(KERN_INFO "Hola mundo\n");
	return 0;
}


static void __exit hola_exit(void)
{
	printk(KERN_INFO "Adios, me marcho\n");
}

module_init(hola_init);
module_exit(hola_exit);


Makefile:

obj-m += hello.o

all:
	make -C /lib/modules/$(shell uname -r)/build M=${PWD} modules
clean:
	make -C /lib/modules/$(shell uname -r)/build M=${PWD} clean


error:

In file included from 
/usr/src/linux-headers-4.6.0-1-common/include/linux/init.h:4:0,
                  from 
/home/hinawa/Documentos/programasC/modulos/mod1/hello.c:9:
/usr/src/linux-headers-4.6.0-1-common/include/linux/compiler.h:89:1: 
error: expected identifier or ‘(’ before ‘struct’
  struct ftrace_branch_data {
  ^
make[4]: *** [/home/hinawa/Documentos/programasC/modulos/mod1/hello.o] 
Error 1
make[3]: *** [_module_/home/hinawa/Documentos/programasC/modulos/mod1] 
Error 2
make[2]: *** [sub-make] Error 2
make[1]: *** [all] Error 2
make: *** [all] Error 2



I do not get to find the error because the code appears to be correct ...

thks