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Dont allow to detach twice.

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This commit is contained in:
Søren Schmidt 2002-04-05 18:02:33 +00:00
parent de4dc9595e
commit 111ab6f7ed
1 changed files with 2 additions and 1 deletions
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3
sys/dev/ata/ata-all.c
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@ -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 */