dragon: fix off by one in devfd

diff --git a/Kernel/platform-dragon/devfd.c b/Kernel/platform-dragon/devfd.c
index 48d9400..c4754a5 100644 (file)
--- a/Kernel/platform-dragon/devfd.c
+++ b/Kernel/platform-dragon/devfd.c
@@ -105,7 +105,7 @@ bad2:
 
 int fd_open(uint8_t minor, uint16_t flag)
 {
-    if(minor > MAX_FD) {
+    if(minor >= MAX_FD) {
         udata.u_error = ENODEV;
         return -1;
     }