diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 9d7eb530f95f..aa07f5938f05 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -366,8 +366,8 @@ static int __dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr,
 	struct safe_buffer *buf;
 	unsigned long off;
 
-	dev_dbg(dev, "%s(dma=%#x,off=%#lx,sz=%zx,dir=%x)\n",
-		__func__, addr, off, sz, dir);
+	dev_dbg(dev, "%s(dma=%#x,sz=%zx,dir=%x)\n",
+		__func__, addr, sz, dir);
 
 	buf = find_safe_buffer_dev(dev, addr, __func__);
 	if (!buf)
@@ -377,8 +377,8 @@ static int __dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr,
 
 	BUG_ON(buf->direction != dir);
 
-	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
-		__func__, buf->ptr, virt_to_dma(dev, buf->ptr),
+	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x off=%#lx) mapped to %p (dma=%#x)\n",
+		__func__, buf->ptr, virt_to_dma(dev, buf->ptr), off,
 		buf->safe, buf->safe_dma_addr);
 
 	DO_STATS(dev->archdata.dmabounce->bounce_count++);
@@ -406,8 +406,8 @@ static int __dmabounce_sync_for_device(struct device *dev, dma_addr_t addr,
 	struct safe_buffer *buf;
 	unsigned long off;
 
-	dev_dbg(dev, "%s(dma=%#x,off=%#lx,sz=%zx,dir=%x)\n",
-		__func__, addr, off, sz, dir);
+	dev_dbg(dev, "%s(dma=%#x,sz=%zx,dir=%x)\n",
+		__func__, addr, sz, dir);
 
 	buf = find_safe_buffer_dev(dev, addr, __func__);
 	if (!buf)
@@ -417,8 +417,8 @@ static int __dmabounce_sync_for_device(struct device *dev, dma_addr_t addr,
 
 	BUG_ON(buf->direction != dir);
 
-	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x) mapped to %p (dma=%#x)\n",
-		__func__, buf->ptr, virt_to_dma(dev, buf->ptr),
+	dev_dbg(dev, "%s: unsafe buffer %p (dma=%#x off=%#lx) mapped to %p (dma=%#x)\n",
+		__func__, buf->ptr, virt_to_dma(dev, buf->ptr), off,
 		buf->safe, buf->safe_dma_addr);
 
 	DO_STATS(dev->archdata.dmabounce->bounce_count++);
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 106c4c0ebccd..d766e4256b74 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -228,7 +228,7 @@ static pte_t **consistent_pte;
 
 #define DEFAULT_CONSISTENT_DMA_SIZE SZ_2M
 
-unsigned long consistent_base = CONSISTENT_END - DEFAULT_CONSISTENT_DMA_SIZE;
+static unsigned long consistent_base = CONSISTENT_END - DEFAULT_CONSISTENT_DMA_SIZE;
 
 void __init init_consistent_dma_size(unsigned long size)
 {
@@ -321,7 +321,7 @@ static struct arm_vmregion_head coherent_head = {
 	.vm_list	= LIST_HEAD_INIT(coherent_head.vm_list),
 };
 
-size_t coherent_pool_size = DEFAULT_CONSISTENT_DMA_SIZE / 8;
+static size_t coherent_pool_size = DEFAULT_CONSISTENT_DMA_SIZE / 8;
 
 static int __init early_coherent_pool(char *p)
 {
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index c21d06c7dd7e..f54d59219764 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -212,7 +212,7 @@ EXPORT_SYMBOL(arm_dma_zone_size);
  * allocations.  This must be the smallest DMA mask in the system,
  * so a successful GFP_DMA allocation will always satisfy this.
  */
-u32 arm_dma_limit;
+phys_addr_t arm_dma_limit;
 
 static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole,
 	unsigned long dma_size)
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 93dc0c17cdcb..c471436c7952 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -62,7 +62,7 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
 #endif
 
 #ifdef CONFIG_ZONE_DMA
-extern u32 arm_dma_limit;
+extern phys_addr_t arm_dma_limit;
 #else
 #define arm_dma_limit ((u32)~0)
 #endif
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 62c9457ccd2f..c0f420f76cd3 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -100,7 +100,7 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size,
 				 struct dma_attrs *attrs)
 {
 	unsigned long dma_mask;
-	struct page *page = NULL;
+	struct page *page;
 	unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT;
 	dma_addr_t addr;
 
@@ -108,6 +108,7 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size,
 
 	flag |= __GFP_ZERO;
 again:
+	page = NULL;
 	if (!(flag & GFP_ATOMIC))
 		page = dma_alloc_from_contiguous(dev, count, get_order(size));
 	if (!page)