5 files changed, 42 insertions, 3 deletions
diff --git a/include/asm-generic/dma-mapping-broken.h b/include/asm-generic/dma-mapping-broken.h
index a7f1a55ce6b..29413d3d460 100644
--- a/include/asm-generic/dma-mapping-broken.h
+++ b/include/asm-generic/dma-mapping-broken.h
@@ -3,7 +3,6 @@
 
 /* This is used for archs that do not support DMA */
 
-
 static inline void *
 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
 		   gfp_t flag)
@@ -19,4 +18,7 @@ dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
 	BUG();
 }
 
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
 #endif /* _ASM_GENERIC_DMA_MAPPING_H */
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
new file mode 100644
index 00000000000..2d0aab1d861
--- /dev/null
+++ b/include/asm-generic/gpio.h
@@ -0,0 +1,25 @@
+#ifndef _ASM_GENERIC_GPIO_H
+#define _ASM_GENERIC_GPIO_H
+
+/* platforms that don't directly support access to GPIOs through I2C, SPI,
+ * or other blocking infrastructure can use these wrappers.
+ */
+
+static inline int gpio_cansleep(unsigned gpio)
+{
+	return 0;
+}
+
+static inline int gpio_get_value_cansleep(unsigned gpio)
+{
+	might_sleep();
+	return gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value_cansleep(unsigned gpio, int value)
+{
+	might_sleep();
+	gpio_set_value(gpio, value);
+}
+
+#endif /* _ASM_GENERIC_GPIO_H */
diff --git a/include/asm-generic/memory_model.h b/include/asm-generic/memory_model.h
index 8078cbd2c01..30d8d33491d 100644
--- a/include/asm-generic/memory_model.h
+++ b/include/asm-generic/memory_model.h
@@ -54,7 +54,7 @@
 #define __page_to_pfn(pg)					\
 ({	struct page *__pg = (pg);				\
 	int __sec = page_to_section(__pg);			\
-	__pg - __section_mem_map_addr(__nr_to_section(__sec));	\
+	(unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec)));	\
 })
 
 #define __pfn_to_page(pfn)				\
diff --git a/include/asm-generic/mman.h b/include/asm-generic/mman.h
index 3b41d2bb70d..5e3dde2ee5a 100644
--- a/include/asm-generic/mman.h
+++ b/include/asm-generic/mman.h
@@ -36,7 +36,6 @@
 #define MADV_DOFORK	11		/* do inherit across fork */
 
 /* compatibility flags */
-#define MAP_ANON	MAP_ANONYMOUS
 #define MAP_FILE	0
 
 #endif
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 9d774d07d95..00c23433b39 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -183,6 +183,19 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres
 #endif
 
 /*
+ * A facility to provide batching of the reload of page tables with the
+ * actual context switch code for paravirtualized guests.  By convention,
+ * only one of the lazy modes (CPU, MMU) should be active at any given
+ * time, entry should never be nested, and entry and exits should always
+ * be paired.  This is for sanity of maintaining and reasoning about the
+ * kernel code.
+ */
+#ifndef __HAVE_ARCH_ENTER_LAZY_CPU_MODE
+#define arch_enter_lazy_cpu_mode()	do {} while (0)
+#define arch_leave_lazy_cpu_mode()	do {} while (0)
+#endif
+
+/*
  * When walking page tables, get the address of the next boundary,
  * or the end address of the range if that comes earlier.  Although no
  * vma end wraps to 0, rounded up __boundary may wrap to 0 throughout.