[PATCH] convert IDE device drivers to driver-model

* 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>

1 files changed, 17 insertions, 25 deletions

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 36c0b74a4e45..c949e98df4b6 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -1865,13 +1865,13 @@ static void idefloppy_setup (ide_drive_t *drive, idefloppy_floppy_t *floppy)
         idefloppy_add_settings(drive);
 }
 
-static int idefloppy_cleanup (ide_drive_t *drive)
+static int ide_floppy_remove(struct device *dev)
 {
+        ide_drive_t *drive = to_ide_device(dev);
         idefloppy_floppy_t *floppy = drive->driver_data;
         struct gendisk *g = floppy->disk;
 
-        if (ide_unregister_subdriver(drive))
-                return 1;
+        ide_unregister_subdriver(drive, floppy->driver);
 
         del_gendisk(g);
 
@@ -1916,26 +1916,24 @@ static ide_proc_entry_t idefloppy_proc[] = {
 
 #endif  /* CONFIG_PROC_FS */
 
-static int idefloppy_attach(ide_drive_t *drive);
+static int ide_floppy_probe(struct device *);
 
-/*
- *      IDE subdriver functions, registered with ide.c
- */
 static ide_driver_t idefloppy_driver = {
         .owner                  = THIS_MODULE,
-        .name                   = "ide-floppy",
+        .gen_driver = {
+                .name           = "ide-floppy",
+                .bus            = &ide_bus_type,
+                .probe          = ide_floppy_probe,
+                .remove         = ide_floppy_remove,
+        },
         .version                = IDEFLOPPY_VERSION,
         .media                  = ide_floppy,
-        .busy                   = 0,
         .supports_dsc_overlap   = 0,
-        .cleanup                = idefloppy_cleanup,
         .do_request             = idefloppy_do_request,
         .end_request            = idefloppy_do_end_request,
         .error                  = __ide_error,
         .abort                  = __ide_abort,
         .proc                   = idefloppy_proc,
-        .attach                 = idefloppy_attach,
-        .drives                 = LIST_HEAD_INIT(idefloppy_driver.drives),
 };
 
 static int idefloppy_open(struct inode *inode, struct file *filp)
@@ -2122,8 +2120,9 @@ static struct block_device_operations idefloppy_ops = {
         .revalidate_disk= idefloppy_revalidate_disk
 };
 
-static int idefloppy_attach (ide_drive_t *drive)
+static int ide_floppy_probe(struct device *dev)
 {
+        ide_drive_t *drive = to_ide_device(dev);
         idefloppy_floppy_t *floppy;
         struct gendisk *g;
 
@@ -2152,10 +2151,7 @@ static int idefloppy_attach (ide_drive_t *drive)
 
         ide_init_disk(g, drive);
 
-        if (ide_register_subdriver(drive, &idefloppy_driver)) {
-                printk (KERN_ERR "ide-floppy: %s: Failed to register the driver with ide.c\n", drive->name);
-                goto out_put_disk;
-        }
+        ide_register_subdriver(drive, &idefloppy_driver);
 
         memset(floppy, 0, sizeof(*floppy));
 
@@ -2169,9 +2165,8 @@ static int idefloppy_attach (ide_drive_t *drive)
 
         drive->driver_data = floppy;
 
-        DRIVER(drive)->busy++;
         idefloppy_setup (drive, floppy);
-        DRIVER(drive)->busy--;
+
         g->minors = 1 << PARTN_BITS;
         g->driverfs_dev = &drive->gendev;
         strcpy(g->devfs_name, drive->devfs_name);
@@ -2181,19 +2176,17 @@ static int idefloppy_attach (ide_drive_t *drive)
         add_disk(g);
         return 0;
 
-out_put_disk:
-        put_disk(g);
 out_free_floppy:
         kfree(floppy);
 failed:
-        return 1;
+        return -ENODEV;
 }
 
 MODULE_DESCRIPTION("ATAPI FLOPPY Driver");
 
 static void __exit idefloppy_exit (void)
 {
-        ide_unregister_driver(&idefloppy_driver);
+        driver_unregister(&idefloppy_driver.gen_driver);
 }
 
 /*
@@ -2202,8 +2195,7 @@ static void __exit idefloppy_exit (void)
 static int idefloppy_init (void)
 {
         printk("ide-floppy driver " IDEFLOPPY_VERSION "\n");
-        ide_register_driver(&idefloppy_driver);
-        return 0;
+        return driver_register(&idefloppy_driver.gen_driver);
 }
 
 module_init(idefloppy_init);