sh: Kill off unused flush_icache_user_range().

We use flush_cache_page() outright in copy_to_user_page(), and nothing
else needs it, so just kill it off. SH-5 still defines its own version,
but that too will go away in the same fashion once it converts over.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/asm/cacheflush.h

@@ -21,7 +21,6 @@
 #define flush_icache_range(start, end)		do { } while (0)
 #define flush_icache_page(vma,pg)		do { } while (0)
 #define flush_cache_sigtramp(vaddr)		do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
 #define __flush_wback_region(start, size)	do { (void)(start); } while (0)
 #define __flush_purge_region(start, size)	do { (void)(start); } while (0)
 #define __flush_invalidate_region(start, size)	do { (void)(start); } while (0)

arch/sh/include/cpu-common/cpu/cacheflush.h

@@ -34,7 +34,6 @@
 #define flush_dcache_page(page)			do { } while (0)
 #define flush_icache_range(start, end)		do { } while (0)
 #define flush_icache_page(vma,pg)		do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
 #define flush_cache_sigtramp(vaddr)		do { } while (0)
 
 #endif /* __ASM_CPU_SH2_CACHEFLUSH_H */

arch/sh/include/cpu-sh2a/cpu/cacheflush.h

@@ -25,7 +25,6 @@
 #define flush_dcache_page(page)			do { } while (0)
 void flush_icache_range(unsigned long start, unsigned long end);
 #define flush_icache_page(vma,pg)		do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
 #define flush_cache_sigtramp(vaddr)		do { } while (0)
 
 #endif /* __ASM_CPU_SH2A_CACHEFLUSH_H */

arch/sh/include/cpu-sh3/cpu/cacheflush.h

@@ -27,7 +27,6 @@ void flush_icache_page(struct vm_area_struct *vma, struct page *page);
 
 /* SH3 has unified cache so no special action needed here */
 #define flush_cache_sigtramp(vaddr)		do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
 
 #else
 #include <cpu-common/cpu/cacheflush.h>

arch/sh/include/cpu-sh4/cpu/cacheflush.h

@@ -25,8 +25,6 @@ void flush_cache_page(struct vm_area_struct *vma, unsigned long addr,
 		      unsigned long pfn);
 void flush_dcache_page(struct page *pg);
 void flush_icache_range(unsigned long start, unsigned long end);
-void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
-			     unsigned long addr, int len);
 
 #define flush_icache_page(vma,pg)		do { } while (0)
 

arch/sh/include/cpu-sh5/cpu/cacheflush.h

@@ -15,9 +15,6 @@ extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
 extern void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn);
 extern void flush_dcache_page(struct page *pg);
 extern void flush_icache_range(unsigned long start, unsigned long end);
-extern void flush_icache_user_range(struct vm_area_struct *vma,
-				    struct page *page, unsigned long addr,
-				    int len);
 
 #define flush_cache_dup_mm(mm)	flush_cache_mm(mm)
 #define flush_icache_page(vma, page)	do { } while (0)

arch/sh/mm/cache-sh4.c

@@ -401,20 +401,6 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start,
 	}
 }
 
-/*
- * flush_icache_user_range
- * @vma: VMA of the process
- * @page: page
- * @addr: U0 address
- * @len: length of the range (< page size)
- */
-void flush_icache_user_range(struct vm_area_struct *vma,
-			     struct page *page, unsigned long addr, int len)
-{
-	flush_cache_page(vma, addr, page_to_pfn(page));
-	mb();
-}
-
 /**
  * __flush_cache_4096
  *

arch/sh/mm/cache-sh5.c

@@ -655,7 +655,7 @@ void flush_icache_range(unsigned long start, unsigned long end)
  * range following a poke into the program text through the ptrace() call
  * from another process (e.g. for BRK instruction insertion).
  */
-void flush_icache_user_range(struct vm_area_struct *vma,
+static void flush_icache_user_range(struct vm_area_struct *vma,
 			struct page *page, unsigned long addr, int len)
 {