[ALSA] Remove IRQF_DISABLED for shared PCI irqs

Fix IRQ flags for PCI devices.
The shared IRQs for PCI devices shouldn't be allocated with
IRQF_DISABLED.  Also, when MSI is enabled, IRQF_SHARED shouldn't
be used.
The patch removes unnecessary cast in request_irq and free_irq,
too.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
diff --git a/sound/pci/ad1889.c b/sound/pci/ad1889.c
index cbf8331c..98970d4 100644
--- a/sound/pci/ad1889.c
+++ b/sound/pci/ad1889.c
@@ -858,7 +858,7 @@
 	synchronize_irq(chip->irq);
 	
 	if (chip->irq >= 0)
-		free_irq(chip->irq, (void*)chip);
+		free_irq(chip->irq, chip);
 
 skip_hw:
 	if (chip->iobase)
@@ -945,7 +945,7 @@
 	spin_lock_init(&chip->lock);	/* only now can we call ad1889_free */
 
 	if (request_irq(pci->irq, snd_ad1889_interrupt,
-			IRQF_DISABLED|IRQF_SHARED, card->driver, (void*)chip)) {
+			IRQF_SHARED, card->driver, chip)) {
 		printk(KERN_ERR PFX "cannot obtain IRQ %d\n", pci->irq);
 		snd_ad1889_free(chip);
 		return -EBUSY;