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[PATCH] convert IDE device drivers to driver-model

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* add ide_bus_match() and export ide_bus_type
* split ide_remove_driver_from_hwgroup() out of ide_unregister()
* move device cleanup from ide_unregister() to drive_release_dev()
* convert ide_driver_t->name to driver->name
* convert ide_driver_t->{attach,cleanup} to driver->{probe,remove}
* remove ide_driver_t->busy as ide_bus_type->subsys.rwsem
  protects against concurrent ->{probe,remove} calls
* make ide_{un}register_driver() void as it cannot fail now
* use driver_{un}register() directly, remove ide_{un}register_driver()
* use device_register() instead of ata_attach(), remove ata_attach()
* add proc_print_driver() and ide_drivers_show(), remove ide_drivers_op
* fix ide_replace_subdriver() and move it to ide-proc.c
* remove ide_driver_t->drives, ide_drives and drives_lock
* remove ide_driver_t->drivers, drivers and drivers_lock
* remove ide_drive_t->driver and DRIVER() macro

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2005-05-26 14:55:34 +02:00
parent bef9c55884
commit 8604affde9
9 changed files with 216 additions and 449 deletions
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47
drivers/ide/ide-probe.c
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@@ -47,6 +47,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/spinlock.h>
#include <linux/kmod.h>
#include <linux/pci.h>
@@ -918,7 +919,7 @@ int probe_hwif_init_with_fixup(ide_hwif_t *hwif, void (*fixup)(ide_hwif_t *hwif)
want them on default or a new "empty" class
for hotplug reprobing ? */
if (drive->present) {
ata_attach(drive);
device_register(&drive->gendev);
}
}
}
@@ -1279,10 +1280,51 @@ void ide_init_disk(struct gendisk *disk, ide_drive_t *drive)
EXPORT_SYMBOL_GPL(ide_init_disk);
static void ide_remove_drive_from_hwgroup(ide_drive_t *drive)
{
ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
if (drive == drive->next) {
/* special case: last drive from hwgroup. */
BUG_ON(hwgroup->drive != drive);
hwgroup->drive = NULL;
} else {
ide_drive_t *walk;
walk = hwgroup->drive;
while (walk->next != drive)
walk = walk->next;
walk->next = drive->next;
if (hwgroup->drive == drive) {
hwgroup->drive = drive->next;
hwgroup->hwif = hwgroup->drive->hwif;
}
}
BUG_ON(hwgroup->drive == drive);
}
static void drive_release_dev (struct device *dev)
{
ide_drive_t *drive = container_of(dev, ide_drive_t, gendev);
spin_lock_irq(&ide_lock);
if (drive->devfs_name[0] != '\0') {
devfs_remove(drive->devfs_name);
drive->devfs_name[0] = '\0';
}
ide_remove_drive_from_hwgroup(drive);
if (drive->id != NULL) {
kfree(drive->id);
drive->id = NULL;
}
drive->present = 0;
/* Messed up locking ... */
spin_unlock_irq(&ide_lock);
blk_cleanup_queue(drive->queue);
spin_lock_irq(&ide_lock);
drive->queue = NULL;
spin_unlock_irq(&ide_lock);
up(&drive->gendev_rel_sem);
}
@@ -1306,7 +1348,6 @@ static void init_gendisk (ide_hwif_t *hwif)
drive->gendev.driver_data = drive;
drive->gendev.release = drive_release_dev;
if (drive->present) {
device_register(&drive->gendev);
sprintf(drive->devfs_name, "ide/host%d/bus%d/target%d/lun%d",
(hwif->channel && hwif->mate) ?
hwif->mate->index : hwif->index,
@@ -1412,7 +1453,7 @@ int ideprobe_init (void)
hwif->chipset = ide_generic;
for (unit = 0; unit < MAX_DRIVES; ++unit)
if (hwif->drives[unit].present)
ata_attach(&hwif->drives[unit]);
device_register(&hwif->drives[unit].gendev);
}
}
return 0;