ide: ide_unregister() warm-plug bugfix

Fix ide_unregister() to work for ports with no devices attached to them.
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 7cd95f56
......@@ -315,13 +315,14 @@ void ide_unregister(ide_hwif_t *hwif)
BUG_ON(in_interrupt());
BUG_ON(irqs_disabled());
mutex_lock(&ide_cfg_mtx);
spin_lock_irq(&ide_lock);
if (!hwif->present)
goto abort;
__ide_port_unregister_devices(hwif);
hwif->present = 0;
spin_lock_irq(&ide_lock);
if (hwif->present) {
__ide_port_unregister_devices(hwif);
hwif->present = 0;
}
spin_unlock_irq(&ide_lock);
ide_proc_unregister_port(hwif);
......@@ -359,7 +360,6 @@ void ide_unregister(ide_hwif_t *hwif)
/* restore hwif data to pristine status */
ide_init_port_data(hwif, hwif->index);
abort:
spin_unlock_irq(&ide_lock);
mutex_unlock(&ide_cfg_mtx);
}
......
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