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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-18 00:46:23 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-18 00:46:23 +0200
commitf74c91413ec6140ee0553180c5f56fdd27c22a2e (patch)
tree75ba3f7000ba290dc19b1523b12ab95dc5c7b1ea /drivers/ide/ide.c
parent50672e5d7486c9ab312432cbe180ac071f1de8e0 (diff)
ide: add warm-plug support for IDE devices (take 2)
* Add 'struct class ide_port_class' ('ide_port' class) and a 'struct device *portdev' ('ide_port' class device) in ide_hwif_t. * Register 'ide_port' class in ide_init() and unregister it in cleanup_module(). * Create ->portdev in ide_register_port () and unregister it in ide_unregister(). * Add "delete_devices" class device attribute for unregistering IDE devices on a port and "scan" one for probing+registering IDE devices on a port. * Add ide_sysfs_register_port() helper for registering "delete_devices" and "scan" attributes with ->portdev. Call it in ide_device_add_all(). * Document IDE warm-plug support in Documentation/ide/warm-plug-howto.txt. v2: * Convert patch from using 'struct class_device' to use 'struct device'. (thanks to Kay Sievers for doing it) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide.c')
-rw-r--r--drivers/ide/ide.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index cb18ba8de22..d791b1ffb58 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -78,6 +78,8 @@
/* default maximum number of failures */
#define IDE_DEFAULT_MAX_FAILURES 1
+struct class *ide_port_class;
+
static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR,
IDE2_MAJOR, IDE3_MAJOR,
IDE4_MAJOR, IDE5_MAJOR,
@@ -591,6 +593,7 @@ void ide_unregister(unsigned int index, int init_default, int restore)
ide_remove_port_from_hwgroup(hwif);
+ device_unregister(hwif->portdev);
device_unregister(&hwif->gendev);
wait_for_completion(&hwif->gendev_rel_comp);
@@ -1590,6 +1593,13 @@ struct bus_type ide_bus_type = {
EXPORT_SYMBOL_GPL(ide_bus_type);
+static void ide_port_class_release(struct device *portdev)
+{
+ ide_hwif_t *hwif = dev_get_drvdata(portdev);
+
+ put_device(&hwif->gendev);
+}
+
/*
* This is gets invoked once during initialization, to set *everything* up
*/
@@ -1610,11 +1620,23 @@ static int __init ide_init(void)
return ret;
}
+ ide_port_class = class_create(THIS_MODULE, "ide_port");
+ if (IS_ERR(ide_port_class)) {
+ ret = PTR_ERR(ide_port_class);
+ goto out_port_class;
+ }
+ ide_port_class->dev_release = ide_port_class_release;
+
init_ide_data();
proc_ide_create();
return 0;
+
+out_port_class:
+ bus_unregister(&ide_bus_type);
+
+ return ret;
}
#ifdef MODULE
@@ -1651,6 +1673,8 @@ void __exit cleanup_module (void)
proc_ide_destroy();
+ class_destroy(ide_port_class);
+
bus_unregister(&ide_bus_type);
}