From d82965c16781a7c5b8508c3784ba10bbeef34ff4 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Mon, 20 Feb 2006 01:42:51 -0800
Subject: [SPARC64]: Handle zero-length map requests in pci_sun4v.c
By simply changing the do-while loop into a plain
while loop.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
arch/sparc64/kernel/pci_sun4v.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index d9ef0c7580e..a9c44c0ae0a 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -57,7 +57,7 @@ static long pci_iommu_batch_flush(struct pci_iommu_batch *p)
u64 *pglist = p->pglist;
unsigned long npages = p->npages;
- do {
+ while (npages != 0) {
long num;
num = pci_sun4v_iommu_map(devhandle, HV_PCI_TSBID(0, entry),
@@ -75,7 +75,7 @@ static long pci_iommu_batch_flush(struct pci_iommu_batch *p)
entry += num;
npages -= num;
pglist += num;
- } while (npages != 0);
+ }
p->entry = entry;
p->npages = 0;
--
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