blktap2: Fix off-by-one error in driver lookup

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>

diff --git a/tools/blktap2/drivers/tapdisk-server.c b/tools/blktap2/drivers/tapdisk-server.c
index c6a3de514e401ad49f69f1f54b9fcc0450479410..4d9c426f4ac35a767b7bba33c13b7d73806ca199 100644 (file)
--- a/tools/blktap2/drivers/tapdisk-server.c
+++ b/tools/blktap2/drivers/tapdisk-server.c
@@ -53,7 +53,7 @@ tapdisk_server_find_driver_interface(int type)
        int n;
 
        n = sizeof(dtypes) / sizeof(struct disk_info_t *);
-       if (type > n)
+       if (type >= n)
                return NULL;
 
        return dtypes[type]->drv;