[RFC|PATCH] MIPS: tlbex.c: Fix GCC 4.6.0 build error.

[Alexander Clouter <alex@digriz.org.uk>]

For !HUGETLB_PAGE htlb_info barfs, and when !64BIT we get vmalloc_mode
grumbling.

  CC      arch/mips/mm/tlbex.o
arch/mips/mm/tlbex.c: In function 'build_r4000_tlb_refill_handler':
arch/mips/mm/tlbex.c:1155:22: error: variable 'vmalloc_mode' set but not used 
[-Werror=unused-but-set-variable]
arch/mips/mm/tlbex.c:1154:28: error: variable 'htlb_info' set but not used 
[-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Untested other than shovelling through a compiler, it really is turning 
into an ifdef-fest though in there...

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
---
 arch/mips/mm/tlbex.c |   17 ++++++++++++++++-
 1 files changed, 16 insertions(+), 1 deletions(-)

diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 04f9e17..814b3f4 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1151,8 +1151,12 @@ static void __cpuinit 
build_r4000_tlb_refill_handler(void)
        struct uasm_reloc *r = relocs;
        u32 *f;
        unsigned int final_len;
+#ifdef CONFIG_HUGETLB_PAGE
        struct mips_huge_tlb_info htlb_info;
+#endif
+#ifdef CONFIG_64BIT
        enum vmalloc64_mode vmalloc_mode;
+#endif
 
        memset(tlb_handler, 0, sizeof(tlb_handler));
        memset(labels, 0, sizeof(labels));
@@ -1163,13 +1167,24 @@ static void __cpuinit 
build_r4000_tlb_refill_handler(void)
                scratch_reg = allocate_kscratch();
 
        if ((scratch_reg > 0 || scratchpad_available()) && use_bbit_insns()) {
-               htlb_info = build_fast_tlb_refill_handler(&p, &l, &r, K0, K1,
+#ifdef CONFIG_HUGETLB_PAGE
+               htlb_info = 
+#else
+               (void)
+#endif
+                       build_fast_tlb_refill_handler(&p, &l, &r, K0, K1,
                                                          scratch_reg);
+#ifdef CONFIG_64BIT
                vmalloc_mode = refill_scratch;
+#endif
        } else {
+#ifdef CONFIG_HUGETLB_PAGE
                htlb_info.huge_pte = K0;
                htlb_info.restore_scratch = 0;
+#endif
+#ifdef CONFIG_64BIT
                vmalloc_mode = refill_noscratch;
+#endif
                /*
                 * create the plain linear handler
                 */
-- 
1.7.5.1