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authorRalf Baechle <ralf@linux-mips.org>2005-08-17 10:11:10 +0000
committerRalf Baechle <ralf@linux-mips.org>2005-10-29 19:32:09 +0100
commit533330bf7fa19854f3b4accd2b84ff58e3ee160f (patch)
tree841eb3e66c58a34a7f57701fa50fd6d7bbafcda5 /include
parent0952e2905c6bc2e12a43910c7eb898b6481a57b5 (diff)
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>
Diffstat (limited to 'include')
-rw-r--r--include/asm-mips/pgtable-32.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h
index 217afc375a84..0cff64ce0fb8 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) */