diff options
Diffstat (limited to 'arch/sparc64/kernel/pci_iommu.c')
| -rw-r--r-- | arch/sparc64/kernel/pci_iommu.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c index f009b1b45501..33ca56c90da2 100644 --- a/arch/sparc64/kernel/pci_iommu.c +++ b/arch/sparc64/kernel/pci_iommu.c @@ -392,14 +392,16 @@ static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, flushreg = strbuf->strbuf_ctxflush; matchreg = PCI_STC_CTXMATCH_ADDR(strbuf, ctx); - limit = 10000; - do { - pci_iommu_write(flushreg, ctx); - udelay(10); + limit = 100000; + pci_iommu_write(flushreg, ctx); + for(;;) { + if (((long)pci_iommu_read(matchreg)) >= 0L) + break; limit--; if (!limit) break; - } while(((long)pci_iommu_read(matchreg)) < 0L); + udelay(1); + } if (!limit) printk(KERN_WARNING "pci_strbuf_flush: ctx flush " "timeout vaddr[%08x] ctx[%lx]\n", @@ -414,12 +416,12 @@ static void pci_strbuf_flush(struct pci_strbuf *strbuf, struct pci_iommu *iommu, pci_iommu_write(strbuf->strbuf_fsync, strbuf->strbuf_flushflag_pa); (void) pci_iommu_read(iommu->write_complete_reg); - limit = 10000; + limit = 100000; while (!PCI_STC_FLUSHFLAG_SET(strbuf)) { limit--; if (!limit) break; - udelay(10); + udelay(1); membar("#LoadLoad"); } if (!limit) |