Dont allow to detach twice.

2002-04-05 18:02:33 +00:00 · 2002-04-05 18:02:33 +00:00 · 4059babc8f
commit 4059babc8f
parent b9e5e77ee7
1 changed files with 2 additions and 1 deletions
--- a/sys/dev/ata/ata-all.c
+++ b/sys/dev/ata/ata-all.c
@ -215,7 +215,8 @@ ata_detach(device_t dev)
    struct ata_channel *ch;
    int s;
 
-    if (!dev || !(ch = device_get_softc(dev)))
+    if (!dev || !(ch = device_get_softc(dev)) ||
+	!ch->r_io || !ch->r_altio || !ch->r_irq)
 	return ENXIO;

    /* make sure channel is not busy */