ALSA: fm801: move to pcim_* and devm_* functions

The managed functions allow to get ->probe() and ->remove() simplier.
This patch converts code to use managed functions.

While here remove the dead code and fix the value printed in error
message.

[removed pci_release_regions() as it's managed in pcim_release(), too
  -- tiwai]

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/fm801.c

@@ -1186,12 +1186,6 @@ static int snd_fm801_free(struct fm801 *chip)
 		v4l2_device_unregister(&chip->v4l2_dev);
 	}
 #endif
-	if (chip->irq >= 0)
-		free_irq(chip->irq, chip);
-	pci_release_regions(chip->pci);
-	pci_disable_device(chip->pci);
-
-	kfree(chip);
 	return 0;
 }
 
@@ -1214,28 +1208,23 @@ static int snd_fm801_create(struct snd_card *card,
 	};
 
 	*rchip = NULL;
-	if ((err = pci_enable_device(pci)) < 0)
+	if ((err = pcim_enable_device(pci)) < 0)
 		return err;
-	chip = kzalloc(sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL) {
-		pci_disable_device(pci);
+	chip = devm_kzalloc(&pci->dev, sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL)
 		return -ENOMEM;
-	}
 	spin_lock_init(&chip->reg_lock);
 	chip->card = card;
 	chip->pci = pci;
 	chip->irq = -1;
 	chip->tea575x_tuner = tea575x_tuner;
-	if ((err = pci_request_regions(pci, "FM801")) < 0) {
-		kfree(chip);
-		pci_disable_device(pci);
+	if ((err = pci_request_regions(pci, "FM801")) < 0)
 		return err;
-	}
 	chip->port = pci_resource_start(pci, 0);
 	if ((tea575x_tuner & TUNER_ONLY) == 0) {
-		if (request_irq(pci->irq, snd_fm801_interrupt, IRQF_SHARED,
-				KBUILD_MODNAME, chip)) {
-			dev_err(card->dev, "unable to grab IRQ %d\n", chip->irq);
+		if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
+				IRQF_SHARED, KBUILD_MODNAME, chip)) {
+			dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
 			snd_fm801_free(chip);
 			return -EBUSY;
 		}
@@ -1250,12 +1239,6 @@ static int snd_fm801_create(struct snd_card *card,
 	/* init might set tuner access method */
 	tea575x_tuner = chip->tea575x_tuner;
 
-	if (chip->irq >= 0 && (tea575x_tuner & TUNER_ONLY)) {
-		pci_clear_master(pci);
-		free_irq(chip->irq, chip);
-		chip->irq = -1;
-	}
-
 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 		snd_fm801_free(chip);
 		return err;