From 29108787f706edecf94542f310a12f842f7560b9 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 3 Aug 1996 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1996-08-03

---
 pc/devata.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pc/devata.c b/pc/devata.c
index f7d45f8b73cf8003267a9fecef091703e7f2b34e..a72e99befba48ae846b5ecc1c59e71a6db1c4f43 100644
--- a/pc/devata.c
+++ b/pc/devata.c
@@ -640,6 +640,8 @@ ataclose(Chan *c)
 		return;
 
 	dp = atadrive[DRIVE(c->qid.path)];
+	if(dp == 0)
+		return;
 	p = &dp->p[PART(c->qid.path)];
 	if(strcmp(p->name, "partition") != 0)
 		return;