From ded1a47b8102ca14730ed42cd9b1b35fbd87c6e2 Mon Sep 17 00:00:00 2001
From: Kenneth J Davis <PerditionC@gmail.com>
Date: Sat, 1 Jan 2005 18:03:43 +0000
Subject: [PATCH] bug 1850, properly handle block drivers failing just by
 returning no units

git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1084 6ac86273-5f31-0410-b378-82cca8765d1b
---
 kernel/main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/kernel/main.c b/kernel/main.c
index 29a0a2e..586a61f 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -570,6 +570,14 @@ BOOL init_device(struct dhdr FAR * dhp, char *cmdLine, COUNT mode,
     if (rq.r_endaddr == (BYTE FAR *) dhp)
       return TRUE;
 
+    /* Don't link in block device drivers which indicate no units */
+    if (!(dhp->dh_attr & ATTR_CHAR) && !rq.r_nunits)
+    {
+      rq.r_endaddr = (BYTE FAR *) dhp;
+      return TRUE;
+    }
+
+
     /* Fix for multisegmented device drivers:                          */
     /*   If there are multiple device drivers in a single driver file, */
     /*   only the END ADDRESS returned by the last INIT call should be */