From f74c91413ec6140ee0553180c5f56fdd27c22a2e Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 18 Apr 2008 00:46:23 +0200 Subject: 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 --- drivers/ide/ide.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'drivers/ide/ide.c') 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); } -- cgit v1.2.3