3 files changed, 10 insertions, 3 deletions

diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index 242c3440687f..8cba3749a511 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -13,7 +13,7 @@
 
 int swiotlb __read_mostly;
 
-void *swiotlb_alloc_boot(size_t size, unsigned long nslabs)
+void * __init swiotlb_alloc_boot(size_t size, unsigned long nslabs)
 {
         return alloc_bootmem_low_pages(size);
 }
diff --git a/include/linux/dma_remapping.h b/include/linux/dma_remapping.h
index 136f170cecc2..af1dab41674b 100644
--- a/include/linux/dma_remapping.h
+++ b/include/linux/dma_remapping.h
@@ -17,7 +17,15 @@ struct dmar_domain;
 struct root_entry;
 
 extern void free_dmar_iommu(struct intel_iommu *iommu);
+
+#ifdef CONFIG_DMAR
 extern int iommu_calculate_agaw(struct intel_iommu *iommu);
+#else
+static inline int iommu_calculate_agaw(struct intel_iommu *iommu)
+{
+        return 0;
+}
+#endif
 
 extern int dmar_disabled;
 
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index fa2dc4e5f9ba..7f5e21b9c16b 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -23,7 +23,6 @@
 #include <linux/spinlock.h>
 #include <linux/swiotlb.h>
 #include <linux/string.h>
-#include <linux/swiotlb.h>
 #include <linux/types.h>
 #include <linux/ctype.h>
 #include <linux/highmem.h>
@@ -116,7 +115,7 @@ setup_io_tlb_npages(char *str)
 __setup("swiotlb=", setup_io_tlb_npages);
 /* make io_tlb_overflow tunable too? */
 
-void * __weak swiotlb_alloc_boot(size_t size, unsigned long nslabs)
+void * __weak __init swiotlb_alloc_boot(size_t size, unsigned long nslabs)
 {
         return alloc_bootmem_low_pages(size);
 }