3 files changed, 14 insertions, 5 deletions
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index c7f4f8e3e297..bd0ea191dfa9 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -223,6 +223,9 @@ extern char empty_zero_page[PAGE_SIZE];
 #define _PAGE_SPECIAL	0x004		/* SW associated with special page */
 #define __HAVE_ARCH_PTE_SPECIAL
 
+/* Set of bits not changed in pte_modify */
+#define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_SPECIAL)
+
 /* Six different types of pages. */
 #define _PAGE_TYPE_EMPTY	0x400
 #define _PAGE_TYPE_NONE		0x401
@@ -681,7 +684,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt
  */
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
-	pte_val(pte) &= PAGE_MASK;
+	pte_val(pte) &= _PAGE_CHG_MASK;
 	pte_val(pte) |= pgprot_val(newprot);
 	return pte;
 }
diff --git a/include/asm-s390/system.h b/include/asm-s390/system.h
index e0d4500d5f95..819e7d99ca0c 100644
--- a/include/asm-s390/system.h
+++ b/include/asm-s390/system.h
@@ -315,14 +315,14 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 	asm volatile(						\
 		"	lctlg	%1,%2,0(%0)\n"			\
 		: : "a" (&array), "i" (low), "i" (high),	\
-		    "m" (*(addrtype *)(array)));		\
+		    "m" (*(addrtype *)(&array)));		\
 	})
 
 #define __ctl_store(array, low, high) ({			\
 	typedef struct { char _[sizeof(array)]; } addrtype;	\
 	asm volatile(						\
 		"	stctg	%2,%3,0(%1)\n"			\
-		: "=m" (*(addrtype *)(array))			\
+		: "=m" (*(addrtype *)(&array))			\
 		: "a" (&array), "i" (low), "i" (high));		\
 	})
 
@@ -333,14 +333,14 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
 	asm volatile(						\
 		"	lctl	%1,%2,0(%0)\n"			\
 		: : "a" (&array), "i" (low), "i" (high),	\
-		    "m" (*(addrtype *)(array)));		\
+		    "m" (*(addrtype *)(&array)));		\
 })
 
 #define __ctl_store(array, low, high) ({			\
 	typedef struct { char _[sizeof(array)]; } addrtype;	\
 	asm volatile(						\
 		"	stctl	%2,%3,0(%1)\n"			\
-		: "=m" (*(addrtype *)(array))			\
+		: "=m" (*(addrtype *)(&array))			\
 		: "a" (&array), "i" (low), "i" (high));		\
 	})
 
diff --git a/include/asm-s390/types.h b/include/asm-s390/types.h
index 0e959e20e9a3..41c547656130 100644
--- a/include/asm-s390/types.h
+++ b/include/asm-s390/types.h
@@ -40,7 +40,13 @@ typedef __signed__ long saddr_t;
 
 #ifndef __ASSEMBLY__
 
+typedef u64 dma64_addr_t;
+#ifdef __s390x__
+/* DMA addresses come in 32-bit and 64-bit flavours. */
+typedef u64 dma_addr_t;
+#else
 typedef u32 dma_addr_t;
+#endif
 
 #ifndef __s390x__
 typedef union {