diff options
Diffstat (limited to 'arch/sparc64/kernel/pci_iommu.c')
| -rw-r--r-- | arch/sparc64/kernel/pci_iommu.c | 8 |
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); |