---

yaml --- r: 287643 b: refs/heads/master c: f1c853b h: refs/heads/master i: 287641: 98f13bc 287639: 7030eb6 v: v3
git-mirror · Feb 14, 2012 · a8f78c2 · a8f78c2
1 parent 7a991d4
commit a8f78c2
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Showing 2 changed files with 15 additions and 9 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6fe5f5f3ffade25aa94526010f219df3be521bf7
+refs/heads/master: f1c853b53cf2b49eb32791072c8a8ee04f122f58
diff --git a/trunk/arch/powerpc/platforms/powernv/pci.c b/trunk/arch/powerpc/platforms/powernv/pci.c
@@ -52,32 +52,38 @@ static int pnv_msi_check_device(struct pci_dev* pdev, int nvec, int type)
 
 static unsigned int pnv_get_one_msi(struct pnv_phb *phb)
 {
-	unsigned int id;
+	unsigned long flags;
+	unsigned int id, rc;
+
+	spin_lock_irqsave(&phb->lock, flags);
 
-	spin_lock(&phb->lock);
 	id = find_next_zero_bit(phb->msi_map, phb->msi_count, phb->msi_next);
 	if (id >= phb->msi_count && phb->msi_next)
 		id = find_next_zero_bit(phb->msi_map, phb->msi_count, 0);
 	if (id >= phb->msi_count) {
-		spin_unlock(&phb->lock);
-		return 0;
+		rc = 0;
+		goto out;
 	}
 	__set_bit(id, phb->msi_map);
-	spin_unlock(&phb->lock);
-	return id + phb->msi_base;
+	rc = id + phb->msi_base;
+out:
+	spin_unlock_irqrestore(&phb->lock, flags);
+	return rc;
 }
 
 static void pnv_put_msi(struct pnv_phb *phb, unsigned int hwirq)
 {
+	unsigned long flags;
 	unsigned int id;
 
 	if (WARN_ON(hwirq < phb->msi_base ||
 		    hwirq >= (phb->msi_base + phb->msi_count)))
 		return;
 	id = hwirq - phb->msi_base;
-	spin_lock(&phb->lock);
+
+	spin_lock_irqsave(&phb->lock, flags);
 	__clear_bit(id, phb->msi_map);
-	spin_unlock(&phb->lock);
+	spin_unlock_irqrestore(&phb->lock, flags);
 }
 
 static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)