PCI: cleanup MSI code

Cleanup MSI code as follows:

 - fix some types
 - fix strange local variable definition
 - delete unnecessary blank line
 - add comment to #endif which is far from corresponding #ifdef
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/msi.c

@@ -162,6 +162,7 @@ void unmask_msi_irq(unsigned int irq)
 }
 
 static int msi_free_irq(struct pci_dev* dev, int irq);
+
 static int msi_init(void)
 {
 	static int status = -ENOMEM;
@@ -291,7 +292,7 @@ static int msi_lookup_irq(struct pci_dev *dev, int type)
 			continue;
 		spin_unlock_irqrestore(&msi_lock, flags);
 		/* This pre-assigned MSI irq for this device
-		   already exits. Override dev->irq with this irq */
+		   already exists. Override dev->irq with this irq */
 		dev->irq = irq;
 		return 0;
 	}
@@ -458,7 +459,7 @@ void pci_restore_msix_state(struct pci_dev *dev)
 	pci_write_config_word(dev, msi_control_reg(pos), save);
 	enable_msi_mode(dev, pos, PCI_CAP_ID_MSIX);
 }
-#endif
+#endif	/* CONFIG_PM */
 
 /**
  * msi_capability_init - configure device's MSI capability structure

include/linux/msi.h

@@ -7,11 +7,10 @@ struct msi_msg {
 	u32	data;		/* 16 bits of msi message data */
 };
 
-/* Heper functions */
+/* Helper functions */
 extern void mask_msi_irq(unsigned int irq);
 extern void unmask_msi_irq(unsigned int irq);
 extern void read_msi_msg(unsigned int irq, struct msi_msg *msg);
-
 extern void write_msi_msg(unsigned int irq, struct msi_msg *msg);
 
 struct msi_desc {