[media] lirc_parallel: build on smp and kill dead code

Talked to Christoph Bartelmus about this a bit, and he says this driver
actually *should* work okay on CONFIG_SMP, the check was a legacy one
from the very early days of SMP support before it had stabilized (yes,
this driver is that ancient).

Also remove some completely unused code, only noticed after building
this driver for the first time in an eternity (on an SMP host now, of
course).

Signed-off-by: Jarod Wilson <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/staging/lirc/Kconfig

···
 
 config LIRC_PARALLEL
 	tristate "Homebrew Parallel Port Receiver"
-	depends on LIRC_STAGING && PARPORT && !SMP
+	depends on LIRC_STAGING && PARPORT
 	help
 	  Driver for Homebrew Parallel Port Receivers
 

drivers/staging/lirc/lirc_parallel.c

···
 
 /*** Includes ***/
 
-#ifdef CONFIG_SMP
-#error "--- Sorry, this driver is not SMP safe. ---"
-#endif
-
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/errno.h>
···
 
 static int pf(void *handle);
 static void kf(void *handle);
-
-static struct timer_list poll_timer;
-static void poll_state(unsigned long ignored);
-
-static void poll_state(unsigned long ignored)
-{
-	printk(KERN_NOTICE "%s: time\n",
-	       LIRC_DRIVER_NAME);
-	del_timer(&poll_timer);
-	if (is_claimed)
-		return;
-	kf(NULL);
-	if (!is_claimed) {
-		printk(KERN_NOTICE "%s: could not claim port, giving up\n",
-		       LIRC_DRIVER_NAME);
-		init_timer(&poll_timer);
-		poll_timer.expires = jiffies + HZ;
-		poll_timer.data = (unsigned long)current;
-		poll_timer.function = poll_state;
-		add_timer(&poll_timer);
-	}
-}
 
 static int pf(void *handle)
 {