[PATCH] ivshmem: remove unnecessary checks for unsigned

[Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>]

fixes gcc 4.1 warning:
 In function 'ivshmem_io_writel':
 202: warning: comparison is always false due to limited range of data type
 208: warning: comparison is always true due to limited range of data type

Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
---
 hw/ivshmem.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/ivshmem.c b/hw/ivshmem.c
index bbb5cba..afebbc3 100644
--- a/hw/ivshmem.c
+++ b/hw/ivshmem.c
@@ -199,13 +199,13 @@ static void ivshmem_io_writel(void *opaque, target_phys_addr_t addr,
 
         case DOORBELL:
             /* check that dest VM ID is reasonable */
-            if ((dest < 0) || (dest > s->max_peer)) {
+            if (dest > s->max_peer) {
                 IVSHMEM_DPRINTF("Invalid destination VM ID (%d)\n", dest);
                 break;
             }
 
             /* check doorbell range */
-            if ((vector >= 0) && (vector < s->peers[dest].nb_eventfds)) {
+            if (vector < s->peers[dest].nb_eventfds) {
                 IVSHMEM_DPRINTF("Writing %" PRId64 " to VM %d on vector %d\n",
                                                     write_one, dest, vector);
                 if (write(s->peers[dest].eventfds[vector],
-- 
1.7.2.2