From 62104e9446341fa8b8b4742655c9df4fde6bdfa2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B8ren=20Schmidt?= <sos@FreeBSD.org>
Date: Mon, 24 Nov 2003 14:20:19 +0000
Subject: [PATCH] Be less noisy when GEOM probes around during boot if drive
 contains invalid media (ie empty CD/DVD)

Approved by: re@
---
 sys/dev/ata/atapi-cd.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sys/dev/ata/atapi-cd.c b/sys/dev/ata/atapi-cd.c
index 50da0057317..1e835b94c8f 100644
--- a/sys/dev/ata/atapi-cd.c
+++ b/sys/dev/ata/atapi-cd.c
@@ -1000,6 +1000,11 @@ acd_geom_start(struct bio *bp)
 	return;
     }
 
+    if (bp->bio_cmd == BIO_READ && cdp->disk_size == -1) {
+	g_io_deliver(bp, EIO);
+	return;
+    }
+
     /* GEOM classes must do their own request limiting */
     if (bp->bio_length <= cdp->iomax) {
 	mtx_lock(&cdp->queue_mtx);