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-rw-r--r--include/linux/iommu-helper.h12
-rw-r--r--lib/iommu-helper.c9
2 files changed, 10 insertions, 11 deletions
diff --git a/include/linux/iommu-helper.h b/include/linux/iommu-helper.h
index 64d1b638745d..86bdeffe43ad 100644
--- a/include/linux/iommu-helper.h
+++ b/include/linux/iommu-helper.h
@@ -1,6 +1,8 @@
#ifndef _LINUX_IOMMU_HELPER_H
#define _LINUX_IOMMU_HELPER_H
+#include <linux/kernel.h>
+
static inline unsigned long iommu_device_max_index(unsigned long size,
unsigned long offset,
u64 dma_mask)
@@ -20,7 +22,13 @@ extern unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
unsigned long boundary_size,
unsigned long align_mask);
-extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len,
- unsigned long io_page_size);
+static inline unsigned long iommu_num_pages(unsigned long addr,
+ unsigned long len,
+ unsigned long io_page_size)
+{
+ unsigned long size = (addr & (io_page_size - 1)) + len;
+
+ return DIV_ROUND_UP(size, io_page_size);
+}
#endif
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index c0251f4ad08b..da053313ee5c 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c
@@ -38,12 +38,3 @@ again:
return -1;
}
EXPORT_SYMBOL(iommu_area_alloc);
-
-unsigned long iommu_num_pages(unsigned long addr, unsigned long len,
- unsigned long io_page_size)
-{
- unsigned long size = (addr & (io_page_size - 1)) + len;
-
- return DIV_ROUND_UP(size, io_page_size);
-}
-EXPORT_SYMBOL(iommu_num_pages);