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[IA64] don't double >> PAGE_SHIFT pointer for /dev/kmem access
authorJes Sorensen <jes@sgi.com>
Wed, 25 Oct 2006 09:49:53 +0000 (05:49 -0400)
committerTony Luck <tony.luck@intel.com>
Thu, 26 Oct 2006 21:57:06 +0000 (14:57 -0700)
Don't PAGE_SHIFT pointer before handing it to virt_to_page() in
xlate_dev_kmem_ptr() as it results in a double shift.

Spotted by Bob Montgomery.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
include/asm-ia64/uaccess.h patch | blob | blame | history

diff --git a/include/asm-ia64/uaccess.h b/include/asm-ia64/uaccess.h
index 9adb51211c2270d7500dfb00d8ed3a59264651e6..449c8c0fa2bdc65165ff62248fdb4dbf8cba129e 100644 (file)
--- a/include/asm-ia64/uaccess.h
+++ b/include/asm-ia64/uaccess.h
@@ -389,7 +389,7 @@ xlate_dev_kmem_ptr (char * p)
        struct page *page;
        char * ptr;
 
-       page = virt_to_page((unsigned long)p >> PAGE_SHIFT);
+       page = virt_to_page((unsigned long)p);
        if (PageUncached(page))
                ptr = (char *)__pa(p) + __IA64_UNCACHED_OFFSET;
        else