diff options
| -rw-r--r-- | arch/arm/mach-msm/iommu.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/arm/mach-msm/iommu.c b/arch/arm/mach-msm/iommu.c index 134add789187..74f2157eba4e 100644 --- a/arch/arm/mach-msm/iommu.c +++ b/arch/arm/mach-msm/iommu.c @@ -50,13 +50,16 @@ static void __flush_iotlb(struct iommu_domain *domain) unsigned long *fl_table = priv->pgtable; int i; - dmac_flush_range(fl_table, fl_table + SZ_16K); + if (!list_empty(&priv->list_attached)) { + dmac_flush_range(fl_table, fl_table + SZ_16K); - for (i = 0; i < NUM_FL_PTE; i++) - if ((fl_table[i] & 0x03) == FL_TYPE_TABLE) { - void *sl_table = __va(fl_table[i] & FL_BASE_MASK); - dmac_flush_range(sl_table, sl_table + SZ_4K); - } + for (i = 0; i < NUM_FL_PTE; i++) + if ((fl_table[i] & 0x03) == FL_TYPE_TABLE) { + void *sl_table = __va(fl_table[i] & + FL_BASE_MASK); + dmac_flush_range(sl_table, sl_table + SZ_4K); + } + } #endif list_for_each_entry(ctx_drvdata, &priv->list_attached, attached_elm) { |