From 5f46c2f25cfbb5faca7550738ac42c4d1491ddc8 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Mon, 19 Oct 2009 15:14:24 -0600 Subject: ACPI: dock: convert sysfs attributes to an attribute_group As suggested by Dmitry Torokhov, convert the individual sysfs attributes into an attribute group. This change eliminates quite a bit of copy/paste code in the error handling paths. Signed-off-by: Alex Chiang Reviewed-by: Dmitry Torokhov Acked-by: Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/dock.c | 81 ++++++++++++++++------------------------------------- 1 file changed, 24 insertions(+), 57 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 7338b6a3e049..4f2aa98e2cee 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -936,6 +936,19 @@ static ssize_t show_dock_type(struct device *dev, } static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL); +static struct attribute *dock_attributes[] = { + &dev_attr_docked.attr, + &dev_attr_flags.attr, + &dev_attr_undock.attr, + &dev_attr_uid.attr, + &dev_attr_type.attr, + NULL +}; + +static struct attribute_group dock_attribute_group = { + .attrs = dock_attributes +}; + /** * dock_add - add a new dock station * @handle: the dock station handle @@ -969,9 +982,8 @@ static int dock_add(acpi_handle handle) dock_station_count, NULL, 0); dock_device = dock_station->dock_device; if (IS_ERR(dock_device)) { - kfree(dock_station); - dock_station = NULL; - return PTR_ERR(dock_device); + ret = PTR_ERR(dock_device); + goto out; } platform_device_add_data(dock_device, &dock_station, sizeof(struct dock_station *)); @@ -986,47 +998,9 @@ static int dock_add(acpi_handle handle) if (is_battery(handle)) dock_station->flags |= DOCK_IS_BAT; - ret = device_create_file(&dock_device->dev, &dev_attr_docked); - if (ret) { - printk(KERN_ERR "Error %d adding sysfs file\n", ret); - platform_device_unregister(dock_device); - kfree(dock_station); - dock_station = NULL; - return ret; - } - ret = device_create_file(&dock_device->dev, &dev_attr_undock); - if (ret) { - printk(KERN_ERR "Error %d adding sysfs file\n", ret); - device_remove_file(&dock_device->dev, &dev_attr_docked); - platform_device_unregister(dock_device); - kfree(dock_station); - dock_station = NULL; - return ret; - } - ret = device_create_file(&dock_device->dev, &dev_attr_uid); - if (ret) { - printk(KERN_ERR "Error %d adding sysfs file\n", ret); - device_remove_file(&dock_device->dev, &dev_attr_docked); - device_remove_file(&dock_device->dev, &dev_attr_undock); - platform_device_unregister(dock_device); - kfree(dock_station); - dock_station = NULL; - return ret; - } - ret = device_create_file(&dock_device->dev, &dev_attr_flags); - if (ret) { - printk(KERN_ERR "Error %d adding sysfs file\n", ret); - device_remove_file(&dock_device->dev, &dev_attr_docked); - device_remove_file(&dock_device->dev, &dev_attr_undock); - device_remove_file(&dock_device->dev, &dev_attr_uid); - platform_device_unregister(dock_device); - kfree(dock_station); - dock_station = NULL; - return ret; - } - ret = device_create_file(&dock_device->dev, &dev_attr_type); + ret = sysfs_create_group(&dock_device->dev.kobj, &dock_attribute_group); if (ret) - printk(KERN_ERR"Error %d adding sysfs file\n", ret); + goto err_unregister; /* Find dependent devices */ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, @@ -1036,10 +1010,8 @@ static int dock_add(acpi_handle handle) /* add the dock station as a device dependent on itself */ dd = alloc_dock_dependent_device(handle); if (!dd) { - kfree(dock_station); - dock_station = NULL; ret = -ENOMEM; - goto dock_add_err_unregister; + goto err_rmgroup; } add_dock_dependent_device(dock_station, dd); @@ -1047,15 +1019,14 @@ static int dock_add(acpi_handle handle) list_add(&dock_station->sibling, &dock_stations); return 0; -dock_add_err_unregister: - device_remove_file(&dock_device->dev, &dev_attr_type); - device_remove_file(&dock_device->dev, &dev_attr_docked); - device_remove_file(&dock_device->dev, &dev_attr_undock); - device_remove_file(&dock_device->dev, &dev_attr_uid); - device_remove_file(&dock_device->dev, &dev_attr_flags); +err_rmgroup: + sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); +err_unregister: platform_device_unregister(dock_device); +out: kfree(dock_station); dock_station = NULL; + printk(KERN_ERR "%s encountered error %d\n", __func__, ret); return ret; } @@ -1076,11 +1047,7 @@ static int dock_remove(struct dock_station *dock_station) kfree(dd); /* cleanup sysfs */ - device_remove_file(&dock_device->dev, &dev_attr_type); - device_remove_file(&dock_device->dev, &dev_attr_docked); - device_remove_file(&dock_device->dev, &dev_attr_undock); - device_remove_file(&dock_device->dev, &dev_attr_uid); - device_remove_file(&dock_device->dev, &dev_attr_flags); + sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); platform_device_unregister(dock_device); /* free dock station memory */ -- cgit v1.2.3 From f69cfdd24ac40ab7bbd00d6ad85e003da755e3a0 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Mon, 19 Oct 2009 15:14:29 -0600 Subject: ACPI: dock: combine add|alloc_dock_dependent_device (v2) There's no real need to have a separate allocation step when adding a dock dependent device. Combining the two functions is both logical and helps with legibility. Signed-off-by: Alex Chiang Acked-by: Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/dock.c | 55 ++++++++++++++++++----------------------------------- 1 file changed, 19 insertions(+), 36 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 4f2aa98e2cee..ee9829b47e20 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -93,40 +93,30 @@ struct dock_dependent_device { * Dock Dependent device functions * *****************************************************************************/ /** - * alloc_dock_dependent_device - allocate and init a dependent device - * @handle: the acpi_handle of the dependent device + * add_dock_dependent_device - associate a device with the dock station + * @ds: The dock station + * @handle: handle of the dependent device * - * Allocate memory for a dependent device structure for a device referenced - * by the acpi handle + * Add the dependent device to the dock's dependent device list. */ -static struct dock_dependent_device * -alloc_dock_dependent_device(acpi_handle handle) +static int +add_dock_dependent_device(struct dock_station *ds, acpi_handle handle) { struct dock_dependent_device *dd; dd = kzalloc(sizeof(*dd), GFP_KERNEL); - if (dd) { - dd->handle = handle; - INIT_LIST_HEAD(&dd->list); - INIT_LIST_HEAD(&dd->hotplug_list); - } - return dd; -} + if (!dd) + return -ENOMEM; + + dd->handle = handle; + INIT_LIST_HEAD(&dd->list); + INIT_LIST_HEAD(&dd->hotplug_list); -/** - * add_dock_dependent_device - associate a device with the dock station - * @ds: The dock station - * @dd: The dependent device - * - * Add the dependent device to the dock's dependent device list. - */ -static void -add_dock_dependent_device(struct dock_station *ds, - struct dock_dependent_device *dd) -{ spin_lock(&ds->dd_lock); list_add_tail(&dd->list, &ds->dependent_devices); spin_unlock(&ds->dd_lock); + + return 0; } /** @@ -826,7 +816,6 @@ find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv) acpi_status status; acpi_handle tmp, parent; struct dock_station *ds = context; - struct dock_dependent_device *dd; status = acpi_bus_get_ejd(handle, &tmp); if (ACPI_FAILURE(status)) { @@ -840,11 +829,9 @@ find_dock_devices(acpi_handle handle, u32 lvl, void *context, void **rv) goto fdd_out; } - if (tmp == ds->handle) { - dd = alloc_dock_dependent_device(handle); - if (dd) - add_dock_dependent_device(ds, dd); - } + if (tmp == ds->handle) + add_dock_dependent_device(ds, handle); + fdd_out: return AE_OK; } @@ -959,7 +946,6 @@ static struct attribute_group dock_attribute_group = { static int dock_add(acpi_handle handle) { int ret; - struct dock_dependent_device *dd; struct dock_station *dock_station; struct platform_device *dock_device; @@ -1008,12 +994,9 @@ static int dock_add(acpi_handle handle) NULL); /* add the dock station as a device dependent on itself */ - dd = alloc_dock_dependent_device(handle); - if (!dd) { - ret = -ENOMEM; + ret = add_dock_dependent_device(dock_station, handle); + if (ret) goto err_rmgroup; - } - add_dock_dependent_device(dock_station, dd); dock_station_count++; list_add(&dock_station->sibling, &dock_stations); -- cgit v1.2.3 From c6f1905ea91bf56a921c6eb574488869c8c3eeff Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Mon, 19 Oct 2009 15:14:35 -0600 Subject: ACPI: dock: remove global 'dock_device_name' We only use it in one spot, so it probably gets optimized out, but there's still no need to use a global variable for this. Signed-off-by: Alex Chiang Acked-by: Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/dock.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index ee9829b47e20..0a1221854a25 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -50,7 +50,6 @@ MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to " " before undocking"); static struct atomic_notifier_head dock_notifier_list; -static char dock_device_name[] = "dock"; static const struct acpi_device_id dock_device_ids[] = { {"LNXDOCK", 0}, @@ -964,7 +963,7 @@ static int dock_add(acpi_handle handle) /* initialize platform device stuff */ dock_station->dock_device = - platform_device_register_simple(dock_device_name, + platform_device_register_simple("dock", dock_station_count, NULL, 0); dock_device = dock_station->dock_device; if (IS_ERR(dock_device)) { -- cgit v1.2.3 From 9751cb721ef650729e981c7b39abb7676cd646e1 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Mon, 19 Oct 2009 15:14:40 -0600 Subject: ACPI: dock: dock_add - hoist up platform_device_register_simple() Move the call to platform_device_register_simple so that we do it before allocating and initializing our struct dock_station. Signed-off-by: Alex Chiang Acked-by: Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/dock.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 0a1221854a25..3bd89823402a 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -948,11 +948,18 @@ static int dock_add(acpi_handle handle) struct dock_station *dock_station; struct platform_device *dock_device; + dock_device = + platform_device_register_simple("dock", + dock_station_count, NULL, 0); + if (IS_ERR(dock_device)) + return PTR_ERR(dock_device); + /* allocate & initialize the dock_station private data */ dock_station = kzalloc(sizeof(*dock_station), GFP_KERNEL); if (!dock_station) return -ENOMEM; dock_station->handle = handle; + dock_station->dock_device = dock_device; dock_station->last_dock_time = jiffies - HZ; INIT_LIST_HEAD(&dock_station->dependent_devices); INIT_LIST_HEAD(&dock_station->hotplug_devices); @@ -961,15 +968,6 @@ static int dock_add(acpi_handle handle) mutex_init(&dock_station->hp_lock); ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list); - /* initialize platform device stuff */ - dock_station->dock_device = - platform_device_register_simple("dock", - dock_station_count, NULL, 0); - dock_device = dock_station->dock_device; - if (IS_ERR(dock_device)) { - ret = PTR_ERR(dock_device); - goto out; - } platform_device_add_data(dock_device, &dock_station, sizeof(struct dock_station *)); -- cgit v1.2.3 From fe06fba292af5ed5c1c6ad9af3a9ef68da7a5088 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Mon, 19 Oct 2009 15:14:45 -0600 Subject: ACPI: dock: add struct dock_station * directly to platform device data Instead of adding a (struct dock_station **) to our dock device's platform data, we can add the (struct dock_station *) directly. This change saves us some ugly casting and improves readability. The cost of making this change is an extra 290 bytes of stack usage, but this is an infrequently called code-path and unlikely to cause the kernel to blow up. Signed-off-by: Alex Chiang Acked-by: Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/dock.c | 40 +++++++++++++--------------------------- 1 file changed, 13 insertions(+), 27 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 3bd89823402a..cfcd8eeb3b2a 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -843,8 +843,7 @@ static ssize_t show_docked(struct device *dev, { struct acpi_device *tmp; - struct dock_station *dock_station = *((struct dock_station **) - dev->platform_data); + struct dock_station *dock_station = dev->platform_data; if (ACPI_SUCCESS(acpi_bus_get_device(dock_station->handle, &tmp))) return snprintf(buf, PAGE_SIZE, "1\n"); @@ -858,8 +857,7 @@ static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL); static ssize_t show_flags(struct device *dev, struct device_attribute *attr, char *buf) { - struct dock_station *dock_station = *((struct dock_station **) - dev->platform_data); + struct dock_station *dock_station = dev->platform_data; return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags); } @@ -872,8 +870,7 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int ret; - struct dock_station *dock_station = *((struct dock_station **) - dev->platform_data); + struct dock_station *dock_station = dev->platform_data; if (!count) return -EINVAL; @@ -891,8 +888,7 @@ static ssize_t show_dock_uid(struct device *dev, struct device_attribute *attr, char *buf) { unsigned long long lbuf; - struct dock_station *dock_station = *((struct dock_station **) - dev->platform_data); + struct dock_station *dock_station = dev->platform_data; acpi_status status = acpi_evaluate_integer(dock_station->handle, "_UID", NULL, &lbuf); if (ACPI_FAILURE(status)) @@ -905,8 +901,7 @@ static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL); static ssize_t show_dock_type(struct device *dev, struct device_attribute *attr, char *buf) { - struct dock_station *dock_station = *((struct dock_station **) - dev->platform_data); + struct dock_station *dock_station = dev->platform_data; char *type; if (dock_station->flags & DOCK_IS_DOCK) @@ -944,20 +939,18 @@ static struct attribute_group dock_attribute_group = { */ static int dock_add(acpi_handle handle) { - int ret; - struct dock_station *dock_station; + int ret, id; + struct dock_station ds, *dock_station; struct platform_device *dock_device; + id = dock_station_count; dock_device = - platform_device_register_simple("dock", - dock_station_count, NULL, 0); + platform_device_register_data(NULL, "dock", + id, &ds, sizeof(ds)); if (IS_ERR(dock_device)) return PTR_ERR(dock_device); - /* allocate & initialize the dock_station private data */ - dock_station = kzalloc(sizeof(*dock_station), GFP_KERNEL); - if (!dock_station) - return -ENOMEM; + dock_station = dock_device->dev.platform_data; dock_station->handle = handle; dock_station->dock_device = dock_device; dock_station->last_dock_time = jiffies - HZ; @@ -968,9 +961,6 @@ static int dock_add(acpi_handle handle) mutex_init(&dock_station->hp_lock); ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list); - platform_device_add_data(dock_device, &dock_station, - sizeof(struct dock_station *)); - /* we want the dock device to send uevents */ dev_set_uevent_suppress(&dock_device->dev, 0); @@ -1003,9 +993,6 @@ err_rmgroup: sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); err_unregister: platform_device_unregister(dock_device); -out: - kfree(dock_station); - dock_station = NULL; printk(KERN_ERR "%s encountered error %d\n", __func__, ret); return ret; } @@ -1026,13 +1013,12 @@ static int dock_remove(struct dock_station *dock_station) list) kfree(dd); + list_del(&dock_station->sibling); + /* cleanup sysfs */ sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); platform_device_unregister(dock_device); - /* free dock station memory */ - kfree(dock_station); - dock_station = NULL; return 0; } -- cgit v1.2.3 From 747479a3fb42849fe73b9b1f7545d751bde7d632 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Mon, 19 Oct 2009 15:14:50 -0600 Subject: ACPI: dock: minor whitespace and style cleanups Removed some stray whitespaces Added whitespace when needed for legibility Removed unneeded curly braces Removed useless void casts Removed unnecessary local variable initialization Renamed variables to help out with 80-column fixes Signed-off-by: Alex Chiang Acked-by: Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/dock.c | 103 +++++++++++++++++++++++----------------------------- 1 file changed, 45 insertions(+), 58 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index cfcd8eeb3b2a..d4c3d82bef3f 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -238,6 +238,7 @@ static int is_battery(acpi_handle handle) static int is_ejectable_bay(acpi_handle handle) { acpi_handle phandle; + if (!is_ejectable(handle)) return 0; if (is_battery(handle) || is_ata(handle)) @@ -264,14 +265,13 @@ int is_dock_device(acpi_handle handle) if (is_dock(handle)) return 1; - list_for_each_entry(dock_station, &dock_stations, sibling) { + + list_for_each_entry(dock_station, &dock_stations, sibling) if (find_dock_dependent_device(dock_station, handle)) return 1; - } return 0; } - EXPORT_SYMBOL_GPL(is_dock_device); /** @@ -294,8 +294,6 @@ static int dock_present(struct dock_station *ds) return 0; } - - /** * dock_create_acpi_device - add new devices to acpi * @handle - handle of the device to add @@ -309,7 +307,7 @@ static int dock_present(struct dock_station *ds) */ static struct acpi_device * dock_create_acpi_device(acpi_handle handle) { - struct acpi_device *device = NULL; + struct acpi_device *device; struct acpi_device *parent_device; acpi_handle parent; int ret; @@ -326,8 +324,7 @@ static struct acpi_device * dock_create_acpi_device(acpi_handle handle) ret = acpi_bus_add(&device, parent_device, handle, ACPI_BUS_TYPE_DEVICE); if (ret) { - pr_debug("error adding bus, %x\n", - -ret); + pr_debug("error adding bus, %x\n", -ret); return NULL; } } @@ -353,7 +350,6 @@ static void dock_remove_acpi_device(acpi_handle handle) } } - /** * hotplug_dock_devices - insert or remove devices on the dock station * @ds: the dock station @@ -373,10 +369,9 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event) /* * First call driver specific hotplug functions */ - list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) { + list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) if (dd->ops && dd->ops->handler) dd->ops->handler(dd->handle, event, dd->context); - } /* * Now make sure that an acpi_device is created for each @@ -415,6 +410,7 @@ static void dock_event(struct dock_station *ds, u32 event, int num) list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list) if (dd->ops && dd->ops->uevent) dd->ops->uevent(dd->handle, event, dd->context); + if (num != DOCK_EVENT) kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp); } @@ -445,8 +441,8 @@ static void eject_dock(struct dock_station *ds) arg.type = ACPI_TYPE_INTEGER; arg.integer.value = 1; - if (ACPI_FAILURE(acpi_evaluate_object(ds->handle, "_EJ0", - &arg_list, NULL))) + status = acpi_evaluate_object(ds->handle, "_EJ0", &arg_list, NULL); + if (ACPI_FAILURE(status)) pr_debug("Failed to evaluate _EJ0!\n"); } @@ -566,7 +562,6 @@ int register_dock_notifier(struct notifier_block *nb) return atomic_notifier_chain_register(&dock_notifier_list, nb); } - EXPORT_SYMBOL_GPL(register_dock_notifier); /** @@ -580,7 +575,6 @@ void unregister_dock_notifier(struct notifier_block *nb) atomic_notifier_chain_unregister(&dock_notifier_list, nb); } - EXPORT_SYMBOL_GPL(unregister_dock_notifier); /** @@ -625,7 +619,6 @@ register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops, return ret; } - EXPORT_SYMBOL_GPL(register_hotplug_dock_device); /** @@ -646,7 +639,6 @@ void unregister_hotplug_dock_device(acpi_handle handle) dock_del_hotplug_device(dock_station, dd); } } - EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device); /** @@ -761,7 +753,7 @@ struct dock_data { static void acpi_dock_deferred_cb(void *context) { - struct dock_data *data = (struct dock_data *)context; + struct dock_data *data = context; dock_notify(data->handle, data->event, data->ds); kfree(data); @@ -771,23 +763,22 @@ static int acpi_dock_notifier_call(struct notifier_block *this, unsigned long event, void *data) { struct dock_station *dock_station; - acpi_handle handle = (acpi_handle)data; + acpi_handle handle = data; if (event != ACPI_NOTIFY_BUS_CHECK && event != ACPI_NOTIFY_DEVICE_CHECK && event != ACPI_NOTIFY_EJECT_REQUEST) return 0; list_for_each_entry(dock_station, &dock_stations, sibling) { if (dock_station->handle == handle) { - struct dock_data *dock_data; + struct dock_data *dd; - dock_data = kmalloc(sizeof(*dock_data), GFP_KERNEL); - if (!dock_data) + dd = kmalloc(sizeof(*dd), GFP_KERNEL); + if (!dd) return 0; - dock_data->handle = handle; - dock_data->event = event; - dock_data->ds = dock_station; - acpi_os_hotplug_execute(acpi_dock_deferred_cb, - dock_data); + dd->handle = handle; + dd->event = event; + dd->ds = dock_station; + acpi_os_hotplug_execute(acpi_dock_deferred_cb, dd); return 0 ; } } @@ -941,28 +932,28 @@ static int dock_add(acpi_handle handle) { int ret, id; struct dock_station ds, *dock_station; - struct platform_device *dock_device; + struct platform_device *dd; id = dock_station_count; - dock_device = - platform_device_register_data(NULL, "dock", - id, &ds, sizeof(ds)); - if (IS_ERR(dock_device)) - return PTR_ERR(dock_device); + dd = platform_device_register_data(NULL, "dock", id, &ds, sizeof(ds)); + if (IS_ERR(dd)) + return PTR_ERR(dd); + + dock_station = dd->dev.platform_data; - dock_station = dock_device->dev.platform_data; dock_station->handle = handle; - dock_station->dock_device = dock_device; + dock_station->dock_device = dd; dock_station->last_dock_time = jiffies - HZ; - INIT_LIST_HEAD(&dock_station->dependent_devices); - INIT_LIST_HEAD(&dock_station->hotplug_devices); - INIT_LIST_HEAD(&dock_station->sibling); - spin_lock_init(&dock_station->dd_lock); + mutex_init(&dock_station->hp_lock); + spin_lock_init(&dock_station->dd_lock); + INIT_LIST_HEAD(&dock_station->sibling); + INIT_LIST_HEAD(&dock_station->hotplug_devices); ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list); + INIT_LIST_HEAD(&dock_station->dependent_devices); /* we want the dock device to send uevents */ - dev_set_uevent_suppress(&dock_device->dev, 0); + dev_set_uevent_suppress(&dd->dev, 0); if (is_dock(handle)) dock_station->flags |= DOCK_IS_DOCK; @@ -971,14 +962,13 @@ static int dock_add(acpi_handle handle) if (is_battery(handle)) dock_station->flags |= DOCK_IS_BAT; - ret = sysfs_create_group(&dock_device->dev.kobj, &dock_attribute_group); + ret = sysfs_create_group(&dd->dev.kobj, &dock_attribute_group); if (ret) goto err_unregister; /* Find dependent devices */ - acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_dock_devices, dock_station, - NULL); + acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, + find_dock_devices, dock_station, NULL); /* add the dock station as a device dependent on itself */ ret = add_dock_dependent_device(dock_station, handle); @@ -990,9 +980,9 @@ static int dock_add(acpi_handle handle) return 0; err_rmgroup: - sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); + sysfs_remove_group(&dd->dev.kobj, &dock_attribute_group); err_unregister: - platform_device_unregister(dock_device); + platform_device_unregister(dd); printk(KERN_ERR "%s encountered error %d\n", __func__, ret); return ret; } @@ -1000,20 +990,19 @@ err_unregister: /** * dock_remove - free up resources related to the dock station */ -static int dock_remove(struct dock_station *dock_station) +static int dock_remove(struct dock_station *ds) { struct dock_dependent_device *dd, *tmp; - struct platform_device *dock_device = dock_station->dock_device; + struct platform_device *dock_device = ds->dock_device; if (!dock_station_count) return 0; /* remove dependent devices */ - list_for_each_entry_safe(dd, tmp, &dock_station->dependent_devices, - list) - kfree(dd); + list_for_each_entry_safe(dd, tmp, &ds->dependent_devices, list) + kfree(dd); - list_del(&dock_station->sibling); + list_del(&ds->sibling); /* cleanup sysfs */ sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); @@ -1036,11 +1025,10 @@ find_dock(acpi_handle handle, u32 lvl, void *context, void **rv) { acpi_status status = AE_OK; - if (is_dock(handle)) { - if (dock_add(handle) >= 0) { + if (is_dock(handle)) + if (dock_add(handle) >= 0) status = AE_CTRL_TERMINATE; - } - } + return status; } @@ -1078,8 +1066,7 @@ static int __init dock_init(void) static void __exit dock_exit(void) { - struct dock_station *dock_station; - struct dock_station *tmp; + struct dock_station *tmp, *dock_station; unregister_acpi_bus_notifier(&dock_acpi_notifier); list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling) -- cgit v1.2.3