Merge tag 'arc-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC updates from Vineet Gupta:
 "Things have been calm here - nothing much except for a few fixes"

* tag 'arc-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: mm: don't loose PTE_SPECIAL in pte_modify()
  ARC: dma: fix address translation in arc_dma_free
  ARC: typo fix in mm/ioremap.c
  ARC: fix linux-next build breakage

arch/arc/include/asm/pgtable.h

@@ -110,7 +110,7 @@
 #define ___DEF (_PAGE_PRESENT | _PAGE_CACHEABLE)
 
 /* Set of bits not changed in pte_modify */
-#define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_SPECIAL)
 
 /* More Abbrevaited helpers */
 #define PAGE_U_NONE     __pgprot(___DEF)

arch/arc/kernel/setup.c

@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/cpu.h>
 #include <linux/of_fdt.h>
+#include <linux/of.h>
 #include <linux/of_platform.h>
 #include <linux/cache.h>
 #include <asm/sections.h>

arch/arc/mm/dma.c

@@ -92,7 +92,8 @@ static void *arc_dma_alloc(struct device *dev, size_t size,
 static void arc_dma_free(struct device *dev, size_t size, void *vaddr,
 		dma_addr_t dma_handle, struct dma_attrs *attrs)
 {
-	struct page *page = virt_to_page(dma_handle);
+	phys_addr_t paddr = plat_dma_to_phys(dev, dma_handle);
+	struct page *page = virt_to_page(paddr);
 	int is_non_coh = 1;
 
 	is_non_coh = dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs) ||

arch/arc/mm/ioremap.c

@@ -49,7 +49,7 @@ EXPORT_SYMBOL(ioremap);
 /*
  * ioremap with access flags
  * Cache semantics wise it is same as ioremap - "forced" uncached.
- * However unline vanilla ioremap which bypasses ARC MMU for addresses in
+ * However unlike vanilla ioremap which bypasses ARC MMU for addresses in
  * ARC hardware uncached region, this one still goes thru the MMU as caller
  * might need finer access control (R/W/X)
  */