1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 5c0dec39cf6c..235e89226112 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -72,7 +72,11 @@ enum {
         MSPEC_UNCACHED
 };
 
+#ifdef CONFIG_SGI_SN
 static int is_sn2;
+#else
+#define is_sn2          0
+#endif
 
 /*
  * One of these structures is allocated when an mspec region is mmaped. The
@@ -211,7 +215,7 @@ mspec_nopfn(struct vm_area_struct *vma, unsigned long address)
         if (vdata->type == MSPEC_FETCHOP)
                 paddr = TO_AMO(maddr);
         else
-                paddr = __pa(TO_CAC(maddr));
+                paddr = maddr & ~__IA64_UNCACHED_OFFSET;
 
         pfn = paddr >> PAGE_SHIFT;
 
@@ -335,6 +339,7 @@ mspec_init(void)
          * The fetchop device only works on SN2 hardware, uncached and cached
          * memory drivers should both be valid on all ia64 hardware
          */
+#ifdef CONFIG_SGI_SN
         if (ia64_platform_is("sn2")) {
                 is_sn2 = 1;
                 if (is_shub2()) {
@@ -363,6 +368,7 @@ mspec_init(void)
                         goto free_scratch_pages;
                 }
         }
+#endif
         ret = misc_register(&cached_miscdev);
         if (ret) {
                 printk(KERN_ERR "%s: failed to register device %i\n",