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-rw-r--r--arch/sparc64/kernel/pci_iommu.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c
index 1807876f8c36..2803bc7c2c79 100644
--- a/arch/sparc64/kernel/pci_iommu.c
+++ b/arch/sparc64/kernel/pci_iommu.c
@@ -422,14 +422,12 @@ static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu,
flushreg = strbuf->strbuf_ctxflush;
matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx);
- if (pci_iommu_read(matchreg) == 0)
- goto do_flush_sync;
-
pci_iommu_write(flushreg, ctx);
- if ((val = pci_iommu_read(matchreg)) == 0)
+ val = pci_iommu_read(matchreg);
+ val &= 0xffff;
+ if (!val)
goto do_flush_sync;
- val &= 0xffff;
while (val) {
if (val & 0x1)
pci_iommu_write(flushreg, ctx);