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Date: Wed, 19 Feb 2014 02:31:35 +0100
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Cc: Linux PCI <linux-pci@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>, Tejun Heo <tj@...nel.org>,
Aaron Lu <aaron.lu@...el.com>
Subject: [PATCH 7/9] ACPI / dock: Drop struct acpi_dock_ops and all code related to it
From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Since struct acpi_dock_ops and the code handling it don't have any
users any more after the previous changes, drop that structure and
the code related to it altogether.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
drivers/acpi/dock.c | 167 --------------------------------------------
include/acpi/acpi_drivers.h | 22 -----
2 files changed, 2 insertions(+), 187 deletions(-)
Index: linux-pm/include/acpi/acpi_drivers.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_drivers.h
+++ linux-pm/include/acpi/acpi_drivers.h
@@ -109,36 +109,14 @@ void pci_acpi_crs_quirks(void);
/*--------------------------------------------------------------------------
Dock Station
-------------------------------------------------------------------------- */
-struct acpi_dock_ops {
- acpi_notify_handler fixup;
- acpi_notify_handler handler;
- acpi_notify_handler uevent;
-};
#ifdef CONFIG_ACPI_DOCK
extern int is_dock_device(struct acpi_device *adev);
-extern int register_hotplug_dock_device(acpi_handle handle,
- const struct acpi_dock_ops *ops,
- void *context,
- void (*init)(void *),
- void (*release)(void *));
-extern void unregister_hotplug_dock_device(acpi_handle handle);
#else
static inline int is_dock_device(struct acpi_device *adev)
{
return 0;
}
-static inline int register_hotplug_dock_device(acpi_handle handle,
- const struct acpi_dock_ops *ops,
- void *context,
- void (*init)(void *),
- void (*release)(void *))
-{
- return -ENODEV;
-}
-static inline void unregister_hotplug_dock_device(acpi_handle handle)
-{
-}
#endif /* CONFIG_ACPI_DOCK */
#endif /*__ACPI_DRIVERS_H__*/
Index: linux-pm/drivers/acpi/dock.c
===================================================================
--- linux-pm.orig/drivers/acpi/dock.c
+++ linux-pm/drivers/acpi/dock.c
@@ -68,15 +68,10 @@ struct dock_station {
};
static LIST_HEAD(dock_stations);
static int dock_station_count;
-static DEFINE_MUTEX(hotplug_lock);
struct dock_dependent_device {
struct list_head list;
struct acpi_device *adev;
- const struct acpi_dock_ops *hp_ops;
- void *hp_context;
- unsigned int hp_refcount;
- void (*hp_release)(void *);
};
#define DOCK_DOCKING 0x00000001
@@ -129,70 +124,15 @@ static void remove_dock_dependent_device
}
}
-/**
- * dock_init_hotplug - Initialize a hotplug device on a docking station.
- * @dd: Dock-dependent device.
- * @ops: Dock operations to attach to the dependent device.
- * @context: Data to pass to the @ops callbacks and @release.
- * @init: Optional initialization routine to run after setting up context.
- * @release: Optional release routine to run on removal.
- */
-static int dock_init_hotplug(struct dock_dependent_device *dd,
- const struct acpi_dock_ops *ops, void *context,
- void (*init)(void *), void (*release)(void *))
-{
- int ret = 0;
-
- mutex_lock(&hotplug_lock);
- if (WARN_ON(dd->hp_context)) {
- ret = -EEXIST;
- } else {
- dd->hp_refcount = 1;
- dd->hp_ops = ops;
- dd->hp_context = context;
- dd->hp_release = release;
- if (init)
- init(context);
- }
- mutex_unlock(&hotplug_lock);
- return ret;
-}
-
-/**
- * dock_release_hotplug - Decrement hotplug reference counter of dock device.
- * @dd: Dock-dependent device.
- *
- * Decrement the reference counter of @dd and if 0, detach its hotplug
- * operations from it, reset its context pointer and run the optional release
- * routine if present.
- */
-static void dock_release_hotplug(struct dock_dependent_device *dd)
-{
- mutex_lock(&hotplug_lock);
- if (dd->hp_context && !--dd->hp_refcount) {
- void (*release)(void *) = dd->hp_release;
- void *context = dd->hp_context;
-
- dd->hp_ops = NULL;
- dd->hp_context = NULL;
- dd->hp_release = NULL;
- if (release)
- release(context);
- }
- mutex_unlock(&hotplug_lock);
-}
-
static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event,
enum dock_callback_type cb_type)
{
struct acpi_device *adev = dd->adev;
- acpi_notify_handler cb = NULL;
- bool run = false;
acpi_lock_hp_context();
if (!adev->hp)
- goto no_context;
+ goto out;
if (cb_type == DOCK_CALL_FIXUP) {
void (*fixup)(struct acpi_device *);
@@ -223,37 +163,8 @@ static void dock_hotplug_event(struct do
}
}
- no_context:
+ out:
acpi_unlock_hp_context();
-
- mutex_lock(&hotplug_lock);
-
- if (dd->hp_context) {
- run = true;
- dd->hp_refcount++;
- if (dd->hp_ops) {
- switch (cb_type) {
- case DOCK_CALL_FIXUP:
- cb = dd->hp_ops->fixup;
- break;
- case DOCK_CALL_UEVENT:
- cb = dd->hp_ops->uevent;
- break;
- default:
- cb = dd->hp_ops->handler;
- }
- }
- }
-
- mutex_unlock(&hotplug_lock);
-
- if (!run)
- return;
-
- if (cb)
- cb(dd->adev->handle, event, dd->hp_context);
-
- dock_release_hotplug(dd);
}
static struct dock_station *find_dock_station(acpi_handle handle)
@@ -506,80 +417,6 @@ static int dock_in_progress(struct dock_
}
/**
- * register_hotplug_dock_device - register a hotplug function
- * @handle: the handle of the device
- * @ops: handlers to call after docking
- * @context: device specific data
- * @init: Optional initialization routine to run after registration
- * @release: Optional release routine to run on unregistration
- *
- * If a driver would like to perform a hotplug operation after a dock
- * event, they can register an acpi_notifiy_handler to be called by
- * the dock driver after _DCK is executed.
- */
-int register_hotplug_dock_device(acpi_handle handle,
- const struct acpi_dock_ops *ops, void *context,
- void (*init)(void *), void (*release)(void *))
-{
- struct dock_dependent_device *dd;
- struct dock_station *dock_station;
- struct acpi_device *adev;
- int ret = -EINVAL;
-
- if (WARN_ON(!context))
- return -EINVAL;
-
- if (!dock_station_count)
- return -ENODEV;
-
- ret = acpi_bus_get_device(handle, &adev);
- if (ret)
- return ret;
-
- /*
- * make sure this handle is for a device dependent on the dock,
- * this would include the dock station itself
- */
- list_for_each_entry(dock_station, &dock_stations, sibling) {
- /*
- * An ATA bay can be in a dock and itself can be ejected
- * separately, so there are two 'dock stations' which need the
- * ops
- */
- dd = find_dock_dependent_device(dock_station, adev);
- if (dd && !dock_init_hotplug(dd, ops, context, init, release))
- ret = 0;
- }
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(register_hotplug_dock_device);
-
-/**
- * unregister_hotplug_dock_device - remove yourself from the hotplug list
- * @handle: the acpi handle of the device
- */
-void unregister_hotplug_dock_device(acpi_handle handle)
-{
- struct dock_dependent_device *dd;
- struct dock_station *dock_station;
- struct acpi_device *adev;
-
- if (!dock_station_count)
- return;
-
- if (acpi_bus_get_device(handle, &adev))
- return;
-
- list_for_each_entry(dock_station, &dock_stations, sibling) {
- dd = find_dock_dependent_device(dock_station, adev);
- if (dd)
- dock_release_hotplug(dd);
- }
-}
-EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device);
-
-/**
* handle_eject_request - handle an undock request checking for error conditions
*
* Check to make sure the dock device is still present, then undock and
--
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