#define FMODE_DMFM 0x10
 
+#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
+#define SUPPORT_JOYSTICK 1
+#endif
+
 static struct pci_driver solo1_driver;
 
 /* --------------------------------------------------------------------- */
                unsigned char obuf[MIDIOUTBUF];
        } midi;
 
+#if SUPPORT_JOYSTICK
        struct gameport *gameport;
+#endif
 };
 
 /* --------------------------------------------------------------------- */
        return 0;
 }
 
+#ifdef SUPPORT_JOYSTICK
 static int __devinit solo1_register_gameport(struct solo1_state *s, int io_port)
 {
        struct gameport *gp;
        return 0;
 }
 
+static inline void solo1_unregister_gameport(struct solo1_state *s)
+{
+       if (s->gameport) {
+               int gpio = s->gameport->io;
+               gameport_unregister_port(s->gameport);
+               release_region(gpio, GAMEPORT_EXTENT);
+       }
+}
+#else
+static inline int solo1_register_gameport(struct solo1_state *s, int io_port) { return -ENOSYS; }
+static inline void solo1_unregister_gameport(struct solo1_state *s) { }
+#endif /* SUPPORT_JOYSTICK */
+
 static int __devinit solo1_probe(struct pci_dev *pcidev, const struct pci_device_id *pciid)
 {
        struct solo1_state *s;
        synchronize_irq(s->irq);
        pci_write_config_word(s->dev, 0x60, 0); /* turn off DDMA controller address space */
        free_irq(s->irq, s);
-       if (s->gameport) {
-               int gpio = s->gameport->io;
-               gameport_unregister_port(s->gameport);
-               release_region(gpio, GAMEPORT_EXTENT);
-       }
+       solo1_unregister_gameport(s);
        release_region(s->iobase, IOBASE_EXTENT);
        release_region(s->sbbase+FMSYNTH_EXTENT, SBBASE_EXTENT-FMSYNTH_EXTENT);
        release_region(s->ddmabase, DDMABASE_EXTENT);