parisc: Ensure full cache coherency for kmap/kunmap

[~andy/linux] / arch / parisc / kernel / cache.c

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index c035673209f732f0850aaa4dc98d2d49eee3b74c..a72545554a3154c254eace0648a769d4df645b25 100644 (file)
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -388,41 +388,6 @@ void flush_kernel_dcache_page_addr(void *addr)
 }
 EXPORT_SYMBOL(flush_kernel_dcache_page_addr);
 
-void clear_user_page(void *vto, unsigned long vaddr, struct page *page)
-{
-       clear_page_asm(vto);
-       if (!parisc_requires_coherency())
-               flush_kernel_dcache_page_asm(vto);
-}
-EXPORT_SYMBOL(clear_user_page);
-
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
-       struct page *pg)
-{
-       /* Copy using kernel mapping.  No coherency is needed
-          (all in kmap/kunmap) on machines that don't support
-          non-equivalent aliasing.  However, the `from' page
-          needs to be flushed before it can be accessed through
-          the kernel mapping. */
-       preempt_disable();
-       flush_dcache_page_asm(__pa(vfrom), vaddr);
-       preempt_enable();
-       copy_page_asm(vto, vfrom);
-       if (!parisc_requires_coherency())
-               flush_kernel_dcache_page_asm(vto);
-}
-EXPORT_SYMBOL(copy_user_page);
-
-#ifdef CONFIG_PA8X00
-
-void kunmap_parisc(void *addr)
-{
-       if (parisc_requires_coherency())
-               flush_kernel_dcache_page_addr(addr);
-}
-EXPORT_SYMBOL(kunmap_parisc);
-#endif
-
 void purge_tlb_entries(struct mm_struct *mm, unsigned long addr)
 {
        unsigned long flags;