[PATCH -next] iommu: Make some functions static

[Wei Yongjun]

The sparse tool complains as follows:

drivers/iommu/iommu.c:386:5: warning:
 symbol 'iommu_insert_resv_region' was not declared. Should it be static?
drivers/iommu/iommu.c:2182:5: warning:
 symbol '__iommu_map' was not declared. Should it be static?

Those functions are not used outside of iommu.c, so mark them static.

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/iommu/iommu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 1ed1e14a1f0c..40947f5bc6c5 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -383,8 +383,8 @@ static ssize_t iommu_group_show_name(struct iommu_group 
*group, char *buf)
  * Elements are sorted by start address and overlapping segments
  * of the same type are merged.
  */
-int iommu_insert_resv_region(struct iommu_resv_region *new,
-                            struct list_head *regions)
+static int iommu_insert_resv_region(struct iommu_resv_region *new,
+                                   struct list_head *regions)
 {
        struct iommu_resv_region *iter, *tmp, *nr, *top;
        LIST_HEAD(stack);
@@ -2179,8 +2179,8 @@ static size_t iommu_pgsize(struct iommu_domain *domain,
        return pgsize;
 }
 
-int __iommu_map(struct iommu_domain *domain, unsigned long iova,
-             phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
+static int __iommu_map(struct iommu_domain *domain, unsigned long iova,
+                      phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
 {
        const struct iommu_ops *ops = domain->ops;
        unsigned long orig_iova = iova;