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ide: prepare init_irq() for using ide_remove_port_from_hwgroup()

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* BUG_ON() early if 'hwif->next == hwif' and there is a 'match' hwgroup.

* Remove printk() for impossible condition and add a BUG_ON(hwgroup->drive)
  to match code in ide_unregister().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-02-01 23:09:36 +01:00
parent 96e5ad309c
commit cae5c82022
1 changed files with 2 additions and 3 deletions
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5
drivers/ide/ide-probe.c
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@ -996,6 +996,7 @@ static int init_irq (ide_hwif_t *hwif)
spin_lock_irq(&ide_lock);
hwif->next = hwgroup->hwif->next;
hwgroup->hwif->next = hwif;
BUG_ON(hwif->next == hwif);
spin_unlock_irq(&ide_lock);
} else {
hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO,
@ -1075,7 +1076,6 @@ static int init_irq (ide_hwif_t *hwif)
out_unlink:
spin_lock_irq(&ide_lock);
if (hwif->next == hwif) {
BUG_ON(match);
BUG_ON(hwgroup->hwif != hwif);
kfree(hwgroup);
} else {
@ -1085,8 +1085,7 @@ out_unlink:
g = g->next;
g->next = hwif->next;
if (hwgroup->hwif == hwif) {
/* Impossible. */
printk(KERN_ERR "Duh. Uninitialized hwif listed as active hwif.\n");
BUG_ON(hwgroup->drive);
hwgroup->hwif = g;
}
BUG_ON(hwgroup->hwif == hwif);