8 files changed, 62 insertions, 21 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 8c8621097fa..d466c8d8826 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -4,6 +4,7 @@
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/errno.h>
+#include <linux/of.h>
 
 #ifdef CONFIG_GPIOLIB
 
@@ -128,13 +129,14 @@ struct gpio_chip {
 	 */
 	struct device_node *of_node;
 	int of_gpio_n_cells;
-	int (*of_xlate)(struct gpio_chip *gc, struct device_node *np,
-		        const void *gpio_spec, u32 *flags);
+	int (*of_xlate)(struct gpio_chip *gc,
+		        const struct of_phandle_args *gpiospec, u32 *flags);
 #endif
 };
 
 extern const char *gpiochip_is_requested(struct gpio_chip *chip,
 			unsigned offset);
+extern struct gpio_chip *gpio_to_chip(unsigned gpio);
 extern int __must_check gpiochip_reserve(int start, int ngpio);
 
 /* add/remove chips */
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 912088773a6..448303bdb85 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -19,6 +19,8 @@
 #include <asm-generic/iomap.h>
 #endif
 
+#include <asm-generic/pci_iomap.h>
+
 #ifndef mmiowb
 #define mmiowb() do {} while (0)
 #endif
@@ -283,9 +285,7 @@ static inline void writesb(const void __iomem *addr, const void *buf, int len)
 #define __io_virt(x) ((void __force *) (x))
 
 #ifndef CONFIG_GENERIC_IOMAP
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
 {
 }
@@ -327,7 +327,7 @@ static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
 #define ioremap_wc ioremap_nocache
 #endif
 
-static inline void iounmap(void *addr)
+static inline void iounmap(void __iomem *addr)
 {
 }
 #endif /* CONFIG_MMU */
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index 98dcd76ce83..8a3d4fde260 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -67,18 +67,15 @@ extern void ioport_unmap(void __iomem *);
 #endif
 
 #ifdef CONFIG_PCI
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
+/* Destroy a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
 #else
 struct pci_dev;
-static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
-{
-	return NULL;
-}
 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
 { }
 #endif
 
+#include <asm-generic/pci_iomap.h>
+
 #endif
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
index 351889d1de1..37d1fe28960 100644
--- a/include/asm-generic/page.h
+++ b/include/asm-generic/page.h
@@ -71,10 +71,14 @@ extern unsigned long memory_end;
 #define PAGE_OFFSET		(0)
 #endif
 
+#ifndef ARCH_PFN_OFFSET
+#define ARCH_PFN_OFFSET		(PAGE_OFFSET >> PAGE_SHIFT)
+#endif
+
 #ifndef __ASSEMBLY__
 
-#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
-#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
+#define __va(x) ((void *)((unsigned long) (x)))
+#define __pa(x) ((unsigned long) (x))
 
 #define virt_to_pfn(kaddr)	(__pa(kaddr) >> PAGE_SHIFT)
 #define pfn_to_virt(pfn)	__va((pfn) << PAGE_SHIFT)
@@ -86,7 +90,7 @@ extern unsigned long memory_end;
 #define page_to_phys(page)      ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
 #endif
 
-#define pfn_valid(pfn)		((pfn) < max_mapnr)
+#define pfn_valid(pfn)		((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
 
 #define	virt_addr_valid(kaddr)	(((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
 				((void *)(kaddr) < (void *)memory_end))
diff --git a/include/asm-generic/pci_iomap.h b/include/asm-generic/pci_iomap.h
new file mode 100644
index 00000000000..8de4b73e19e
--- /dev/null
+++ b/include/asm-generic/pci_iomap.h
@@ -0,0 +1,25 @@
+/* Generic I/O port emulation, based on MN10300 code
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef __ASM_GENERIC_PCI_IOMAP_H
+#define __ASM_GENERIC_PCI_IOMAP_H
+
+struct pci_dev;
+#ifdef CONFIG_PCI
+/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
+extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
+#else
+static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
+{
+	return NULL;
+}
+#endif
+
+#endif /* __ASM_GENERIC_IO_H */
diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index e58fa777fa0..f96a5b58a97 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -139,6 +139,20 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 		__tlb_remove_tlb_entry(tlb, ptep, address);	\
 	} while (0)
 
+/**
+ * tlb_remove_pmd_tlb_entry - remember a pmd mapping for later tlb invalidation
+ * This is a nop so far, because only x86 needs it.
+ */
+#ifndef __tlb_remove_pmd_tlb_entry
+#define __tlb_remove_pmd_tlb_entry(tlb, pmdp, address) do {} while (0)
+#endif
+
+#define tlb_remove_pmd_tlb_entry(tlb, pmdp, address)		\
+	do {							\
+		tlb->need_flush = 1;				\
+		__tlb_remove_pmd_tlb_entry(tlb, pmdp, address);	\
+	} while (0)
+
 #define pte_free_tlb(tlb, ptep, address)			\
 	do {							\
 		tlb->need_flush = 1;				\
diff --git a/include/asm-generic/types.h b/include/asm-generic/types.h
index 7a0f69e6c61..bd39806013b 100644
--- a/include/asm-generic/types.h
+++ b/include/asm-generic/types.h
@@ -6,10 +6,4 @@
  */
 #include <asm-generic/int-ll64.h>
 
-#ifndef __ASSEMBLY__
-
-typedef unsigned short umode_t;
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* _ASM_GENERIC_TYPES_H */
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
index ac68c999b6c..9788568f797 100644
--- a/include/asm-generic/uaccess.h
+++ b/include/asm-generic/uaccess.h
@@ -289,9 +289,14 @@ strncpy_from_user(char *dst, const char __user *src, long count)
  * Return 0 on exception, a value greater than N if too long
  */
 #ifndef __strnlen_user
-#define __strnlen_user strnlen
+#define __strnlen_user(s, n) (strnlen((s), (n)) + 1)
 #endif
 
+/*
+ * Unlike strnlen, strnlen_user includes the nul terminator in
+ * its returned count. Callers should check for a returned value
+ * greater than N as an indication the string is too long.
+ */
 static inline long strnlen_user(const char __user *src, long n)
 {
 	if (!access_ok(VERIFY_READ, src, 1))