MIPS: Loongson: Fix GCC 2.6.0 build error.

  CC      arch/mips/loongson/common/env.o
arch/mips/loongson/common/env.c: In function 'prom_init_env':
arch/mips/loongson/common/env.c:50:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
arch/mips/loongson/common/env.c:51:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
arch/mips/loongson/common/env.c:52:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
arch/mips/loongson/common/env.c:53:12: error: variable 'ret' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/mips/loongson/common/env.c b/arch/mips/loongson/common/env.c
index 11b193f848f8..d93830ad6113 100644
--- a/arch/mips/loongson/common/env.c
+++ b/arch/mips/loongson/common/env.c
@@ -29,9 +29,10 @@ unsigned long memsize, highmemsize;
 
 #define parse_even_earlier(res, option, p)                              \
 do {                                                                    \
-        int ret;                                                        \
+        unsigned int tmp __maybe_unused;                                \
+                                                                        \
         if (strncmp(option, (char *)p, strlen(option)) == 0)            \
-                ret = strict_strtol((char *)p + strlen(option"="), 10, &res); \
+                tmp = strict_strtol((char *)p + strlen(option"="), 10, &res); \
 } while (0)
 
 void __init prom_init_env(void)