1 files changed, 2 insertions, 1 deletions
diff --git a/fs.c b/fs.c
index ae96567..beea46d 100644
--- a/fs.c
+++ b/fs.c
@@ -486,8 +486,9 @@ writei(struct inode *ip, char *src, uint off, uint n)
   struct buf *bp;
 
   if(ip->type == T_DEV){
-    if(ip->major < 0 || ip->major >= NDEV || !devsw[ip->major].write)
+    if(ip->major < 0 || ip->major >= NDEV || !devsw[ip->major].write){
       return -1;
+    }
     return devsw[ip->major].write(ip, src, n);
   }