iommu/vt-d, trivial: clean sparse warnings

Clean up most sparse warnings in Intel DMA and interrupt remapping
drivers.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>

3 files changed, 6 insertions, 6 deletions

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 753c7ecf66a8..158156543410 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -572,7 +572,7 @@ int __init detect_intel_iommu(void)
                         x86_init.iommu.iommu_init = intel_iommu_init;
 #endif
         }
-        early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
+        early_acpi_os_unmap_memory((void __iomem *)dmar_tbl, dmar_tbl_size);
         dmar_tbl = NULL;
 
         return ret ? 1 : -ENODEV;
@@ -1064,7 +1064,7 @@ int dmar_enable_qi(struct intel_iommu *iommu)
         desc_page = alloc_pages_node(iommu->node, GFP_ATOMIC | __GFP_ZERO, 0);
         if (!desc_page) {
                 kfree(qi);
-                iommu->qi = 0;
+                iommu->qi = NULL;
                 return -ENOMEM;
         }
 
@@ -1074,7 +1074,7 @@ int dmar_enable_qi(struct intel_iommu *iommu)
         if (!qi->desc_status) {
                 free_page((unsigned long) qi->desc);
                 kfree(qi);
-                iommu->qi = 0;
+                iommu->qi = NULL;
                 return -ENOMEM;
         }
 
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index dec715c7e525..948c6a0d0f5a 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -382,7 +382,7 @@ struct device_domain_info {
 
 static void flush_unmaps_timeout(unsigned long data);
 
-DEFINE_TIMER(unmap_timer,  flush_unmaps_timeout, 0, 0);
+static DEFINE_TIMER(unmap_timer,  flush_unmaps_timeout, 0, 0);
 
 #define HIGH_WATER_MARK 250
 struct deferred_flush_tables {
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 3b05d1b939c5..228632c99adb 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -295,8 +295,8 @@ int setup_ioapic_remapped_entry(int irq,
                                              vector, attr);
 }
 
-int set_remapped_irq_affinity(struct irq_data *data, const struct cpumask *mask,
-                              bool force)
+static int set_remapped_irq_affinity(struct irq_data *data,
+                                     const struct cpumask *mask, bool force)
 {
         if (!config_enabled(CONFIG_SMP) || !remap_ops ||
             !remap_ops->set_affinity)