diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 2c1075213beceac6bb0eb75be6aeef7adc8f34d7..aca7578b05e56205d854c6f76a5aac88c77d326e 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -81,7 +81,10 @@ void default_teardown_msi_irqs(struct pci_dev *dev)
 		int i, nvec;
 		if (entry->irq == 0)
 			continue;
-		nvec = 1 << entry->msi_attrib.multiple;
+		if (entry->nvec_used)
+			nvec = entry->nvec_used;
+		else
+			nvec = 1 << entry->msi_attrib.multiple;
 		for (i = 0; i < nvec; i++)
 			arch_teardown_msi_irq(entry->irq + i);
 	}
@@ -336,7 +339,10 @@ static void free_msi_irqs(struct pci_dev *dev)
 		int i, nvec;
 		if (!entry->irq)
 			continue;
-		nvec = 1 << entry->msi_attrib.multiple;
+		if (entry->nvec_used)
+			nvec = entry->nvec_used;
+		else
+			nvec = 1 << entry->msi_attrib.multiple;
 #ifdef CONFIG_GENERIC_HARDIRQS
 		for (i = 0; i < nvec; i++)
 			BUG_ON(irq_has_action(entry->irq + i));
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 20c2d6dd5d259f6467baf0939e6837ed85e936b3..ee66f3a12fb6ca3f1cd067a5b9c0350767bc11e2 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -35,6 +35,7 @@ struct msi_desc {
 
 	u32 masked;			/* mask bits */
 	unsigned int irq;
+	unsigned int nvec_used;		/* number of messages */
 	struct list_head list;
 
 	union {