Input: ES1371 (OSS) - do not carry around gameport code if gameport

       core support is disabled.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

sound/oss/es1371.c

@@ -133,6 +133,10 @@
 #include <asm/page.h>
 #include <asm/uaccess.h>
 
+#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
+#define SUPPORT_JOYSTICK
+#endif
+
 /* --------------------------------------------------------------------- */
 
 #undef OSS_DOCUMENTED_MIXER_SEMANTICS
@@ -453,7 +457,10 @@ struct es1371_state {
 		unsigned char obuf[MIDIOUTBUF];
 	} midi;
 
+#ifdef SUPPORT_JOYSTICK
 	struct gameport *gameport;
+#endif
+
 	struct semaphore sem;
 };
 
@@ -2786,12 +2793,63 @@ static struct
 	{ PCI_ANY_ID, PCI_ANY_ID }
 };
 
+#ifdef SUPPORT_JOYSTICK
+
+static int __devinit es1371_register_gameport(struct es1371_state *s)
+{
+	struct gameport *gp;
+	int gpio;
+
+	for (gpio = 0x218; gpio >= 0x200; gpio -= 0x08)
+		if (request_region(gpio, JOY_EXTENT, "es1371"))
+			break;
+
+	if (gpio < 0x200) {
+		printk(KERN_ERR PFX "no free joystick address found\n");
+		return -EBUSY;
+	}
+
+	s->gameport = gp = gameport_allocate_port();
+	if (!gp) {
+		printk(KERN_ERR PFX "can not allocate memory for gameport\n");
+		release_region(gpio, JOY_EXTENT);
+		return -ENOMEM;
+	}
+
+	gameport_set_name(gp, "ESS1371 Gameport");
+	gameport_set_phys(gp, "isa%04x/gameport0", gpio);
+	gp->dev.parent = &s->dev->dev;
+	gp->io = gpio;
+
+	s->ctrl |= CTRL_JYSTK_EN | (((gpio >> 3) & CTRL_JOY_MASK) << CTRL_JOY_SHIFT);
+	outl(s->ctrl, s->io + ES1371_REG_CONTROL);
+
+	gameport_register_port(gp);
+
+	return 0;
+}
+
+static inline void es1371_unregister_gameport(struct es1371_state *s)
+{
+	if (s->gameport) {
+		int gpio = s->gameport->io;
+		gameport_unregister_port(s->gameport);
+		release_region(gpio, JOY_EXTENT);
+
+	}
+}
+
+#else
+static inline int es1371_register_gameport(struct es1371_state *s) { return -ENOSYS; }
+static inline void es1371_unregister_gameport(struct es1371_state *s) { }
+#endif /* SUPPORT_JOYSTICK */
+
+
 static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_device_id *pciid)
 {
 	struct es1371_state *s;
-	struct gameport *gp;
 	mm_segment_t fs;
-	int i, gpio, val, res = -1;
+	int i, val, res = -1;
 	int idx;
 	unsigned long tmo;
 	signed long tmo2;
@@ -2882,23 +2940,6 @@ static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_devic
 		}
 	}
 
-	for (gpio = 0x218; gpio >= 0x200; gpio -= 0x08)
-		if (request_region(gpio, JOY_EXTENT, "es1371"))
-			break;
-
-	if (gpio < 0x200) {
-		printk(KERN_ERR PFX "no free joystick address found\n");
-	} else if (!(s->gameport = gp = gameport_allocate_port())) {
-		printk(KERN_ERR PFX "can not allocate memory for gameport\n");
-		release_region(gpio, JOY_EXTENT);
-	} else {
-		gameport_set_name(gp, "ESS1371 Gameport");
-		gameport_set_phys(gp, "isa%04x/gameport0", gpio);
-		gp->dev.parent = &s->dev->dev;
-		gp->io = gpio;
-		s->ctrl |= CTRL_JYSTK_EN | (((gpio >> 3) & CTRL_JOY_MASK) << CTRL_JOY_SHIFT);
-	}
-
 	s->sctrl = 0;
 	cssr = 0;
 	s->spdif_volume = -1;
@@ -2968,9 +3009,7 @@ static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_devic
 	/* turn on S/PDIF output driver if requested */
 	outl(cssr, s->io+ES1371_REG_STATUS);
 
-	/* register gameport */
-	if (s->gameport)
-		gameport_register_port(s->gameport);
+	es1371_register_gameport(s);
 
 	/* store it in the driver field */
 	pci_set_drvdata(pcidev, s);
@@ -2979,13 +3018,9 @@ static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_devic
 	/* increment devindex */
 	if (devindex < NR_DEVICE-1)
 		devindex++;
-       	return 0;
+	return 0;
 
  err_gp:
-	if (s->gameport) {
-		release_region(s->gameport->io, JOY_EXTENT);
-		gameport_free_port(s->gameport);
-	}
 #ifdef ES1371_DEBUG
 	if (s->ps)
 		remove_proc_entry("es1371", NULL);
@@ -3024,11 +3059,7 @@ static void __devexit es1371_remove(struct pci_dev *dev)
 	outl(0, s->io+ES1371_REG_SERIAL_CONTROL); /* clear serial interrupts */
 	synchronize_irq(s->irq);
 	free_irq(s->irq, s);
-	if (s->gameport) {
-		int gpio = s->gameport->io;
-		gameport_unregister_port(s->gameport);
-		release_region(gpio, JOY_EXTENT);
-	}
+	es1371_unregister_gameport(s);
 	release_region(s->io, ES1371_EXTENT);
 	unregister_sound_dsp(s->dev_audio);
 	unregister_sound_mixer(s->codec->dev_mixer);