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[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>
This commit is contained in:
David S. Miller 2006-02-20 01:42:51 -08:00 committed by David S. Miller
parent abf3b7bd89
commit d82965c167
1 changed files with 2 additions and 2 deletions
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4
arch/sparc64/kernel/pci_sun4v.c
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@ -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;