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ide: update ide_unregister() documentation

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Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-01-06 17:20:51 +01:00
parent b65fac32cf
commit ff670e632e
1 changed files with 5 additions and 13 deletions
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18
drivers/ide/ide.c
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@ -155,22 +155,14 @@ EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
* ide_unregister - free an IDE interface
* @hwif: IDE interface
*
* Perform the final unregister of an IDE interface. At the moment
* we don't refcount interfaces so this will also get split up.
* Perform the final unregister of an IDE interface.
*
* Locking:
* The caller must not hold the IDE locks
* The drive present/vanishing is not yet properly locked
* Take care with the callbacks. These have been split to avoid
* deadlocking the IDE layer. The shutdown callback is called
* before we take the lock and free resources. It is up to the
* caller to be sure there is no pending I/O here, and that
* the interface will not be reopened (present/vanishing locking
* isn't yet done BTW). After we commit to the final kill we
* call the cleanup callback with the ide locks held.
* The caller must not hold the IDE locks.
*
* Unregister restores the hwif structures to the default state.
* This is raving bonkers.
* It is up to the caller to be sure there is no pending I/O here,
* and that the interface will not be reopened (present/vanishing
* locking isn't yet done BTW).
*/
void ide_unregister(ide_hwif_t *hwif)