From 533330bf7fa19854f3b4accd2b84ff58e3ee160f Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 17 Aug 2005 10:11:10 +0000
Subject: [PATCH] On CONFIG_64BIT_PHYS_ADDR, pfn always fits in 'unsigned
 long', but pfn<<PAGE_SHIFT sometimes extends beyond.  The pte is big enough
 to hold 'long long', but the shift in pfn_pte() needs to do its calculation
 with enough bits to hold the result.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 include/asm-mips/pgtable-32.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h
index 217afc375a8..0cff64ce0fb 100644
--- a/include/asm-mips/pgtable-32.h
+++ b/include/asm-mips/pgtable-32.h
@@ -137,7 +137,7 @@ pfn_pte(unsigned long pfn, pgprot_t prot)
 #define pfn_pte(pfn, prot)	__pte(((pfn) << (PAGE_SHIFT + 2)) | pgprot_val(prot))
 #else
 #define pte_pfn(x)		((unsigned long)((x).pte >> PAGE_SHIFT))
-#define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+#define pfn_pte(pfn, prot)	__pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
 #endif
 #endif /* defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32_R1) */
 
-- 
2.41.0