ide: remove IDE devices from /proc/ide/ before unregistering them

IDE devices need to be removed from /proc/ide/ _before_ being unregistered:

* Drop 'ide_hwif_t *hwif' argument from destroy_proc_ide_device()
  and use drive->hwif instead.

* Rename destroy_proc_ide_device() to ide_proc_unregister_device().

* Call ide_proc_unregister_device() in drive_release_dev().

* Remove no longer needed destroy_proc_ide_drives().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/ide-probe.c

@@ -1199,6 +1199,8 @@ static void drive_release_dev (struct device *dev)
 {
 	ide_drive_t *drive = container_of(dev, ide_drive_t, gendev);
 
+	ide_proc_unregister_device(drive);
+
 	spin_lock_irq(&ide_lock);
 	ide_remove_drive_from_hwgroup(drive);
 	kfree(drive->id);

drivers/ide/ide-proc.c

@@ -764,27 +764,16 @@ void ide_proc_port_register_devices(ide_hwif_t *hwif)
 	}
 }
 
-static void destroy_proc_ide_device(ide_hwif_t *hwif, ide_drive_t *drive)
+void ide_proc_unregister_device(ide_drive_t *drive)
 {
 	if (drive->proc) {
 		ide_remove_proc_entries(drive->proc, generic_drive_entries);
 		remove_proc_entry(drive->name, proc_ide_root);
-		remove_proc_entry(drive->name, hwif->proc);
+		remove_proc_entry(drive->name, drive->hwif->proc);
 		drive->proc = NULL;
 	}
 }
 
-static void destroy_proc_ide_drives(ide_hwif_t *hwif)
-{
-	int	d;
-
-	for (d = 0; d < MAX_DRIVES; d++) {
-		ide_drive_t *drive = &hwif->drives[d];
-		if (drive->proc)
-			destroy_proc_ide_device(hwif, drive);
-	}
-}
-
 static ide_proc_entry_t hwif_entries[] = {
 	{ "channel",	S_IFREG|S_IRUGO,	proc_ide_read_channel,	NULL },
 	{ "mate",	S_IFREG|S_IRUGO,	proc_ide_read_mate,	NULL },
@@ -816,7 +805,6 @@ EXPORT_SYMBOL_GPL(ide_pci_create_host_proc);
 void ide_proc_unregister_port(ide_hwif_t *hwif)
 {
 	if (hwif->proc) {
-		destroy_proc_ide_drives(hwif);
 		ide_remove_proc_entries(hwif->proc, hwif_entries);
 		remove_proc_entry(hwif->name, proc_ide_root);
 		hwif->proc = NULL;

include/linux/ide.h

@@ -690,6 +690,7 @@ void proc_ide_create(void);
 void proc_ide_destroy(void);
 void ide_proc_register_port(ide_hwif_t *);
 void ide_proc_port_register_devices(ide_hwif_t *);
+void ide_proc_unregister_device(ide_drive_t *);
 void ide_proc_unregister_port(ide_hwif_t *);
 void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
 void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
@@ -723,6 +724,7 @@ static inline void proc_ide_create(void) { ; }
 static inline void proc_ide_destroy(void) { ; }
 static inline void ide_proc_register_port(ide_hwif_t *hwif) { ; }
 static inline void ide_proc_port_register_devices(ide_hwif_t *hwif) { ; }
+static inline void ide_proc_unregister_device(ide_drive_t *drive) { ; }
 static inline void ide_proc_unregister_port(ide_hwif_t *hwif) { ; }
 static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
 static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }