microblaze: Use unsigned type for limit comparison in cache.c

The patch removes warnings:
arch/microblaze/kernel/cpu/cache.c:146:14: warning: comparison of
unsigned expression < 0 is always false [-Wtype-limits]

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c
index a6e44410672d..0bde47e4fa69 100644
--- a/arch/microblaze/kernel/cpu/cache.c
+++ b/arch/microblaze/kernel/cpu/cache.c
@@ -140,10 +140,10 @@ do {									\
 /* It is used only first parameter for OP - for wic, wdc */
 #define CACHE_RANGE_LOOP_1(start, end, line_length, op)                 \
 do {                                                                    \
-        int volatile temp = 0;                                          \
-        int align = ~(line_length - 1);                                 \
+        unsigned int volatile temp = 0;                                         \
+        unsigned int align = ~(line_length - 1);                                        \
         end = ((end & align) == end) ? end - line_length : end & align; \
-        WARN_ON(end - start < 0);                                       \
+        WARN_ON(end < start);                                   \
                                                                         \
         __asm__ __volatile__ (" 1:      " #op " %1, r0;"                \
                                         "cmpu   %0, %1, %2;"            \