sparc64: Fix range check in kern_addr_valid().

[ Upstream commit ee73887e92a69ae0a5cda21c68ea75a27804c944 ]

In commit b2d438348024b75a1ee8b66b85d77f569a5dfed8 ("sparc64: Make
PAGE_OFFSET variable."), the MAX_PHYS_ADDRESS_BITS value was increased
(to 47).

This constant reference to '41UL' was missed.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index ac5f7087a50d4c9d8a7663ddfeebb3a6d0e8923f..ff97960b624287ff95c91f09ec82a22e095b2d47 100644 (file)
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -916,7 +916,7 @@ static inline bool kern_addr_valid(unsigned long addr)
 {
        unsigned long paddr = __pa(addr);
 
-       if ((paddr >> 41UL) != 0UL)
+       if ((paddr >> MAX_PHYS_ADDRESS_BITS) != 0UL)
                return false;
        return test_bit(paddr >> 22, sparc64_valid_addr_bitmap);
 }