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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-08-27 01:25:28 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-08-27 01:25:28 +0200
commitc92f56cbdfc08c8c207c9476c69c99fdbadbd77b (patch)
treec38480e47fc7c85ea609a6f882f5c5143c33cb74 /drivers/pci
parentd8dfad3876e4386666b759da3c833d62fb8b2267 (diff)
parent0177f29fea534ef5e6af2d76e9a9be0fdd325c4d (diff)
Merge branch 'acpi-cleanup'
* acpi-cleanup: (21 commits) ACPI / dock: fix error return code in dock_add() ACPI / dock: Drop unnecessary local variable from dock_add() ACPI / dock / PCI: Drop ACPI dock notifier chain ACPI / dock: Do not check CONFIG_ACPI_DOCK_MODULE ACPI / dock: Do not leak memory on falilures to add a dock station ACPI: Drop ACPI bus notifier call chain ACPI / dock: Rework the handling of notifications ACPI / dock: Simplify dock_init_hotplug() and dock_release_hotplug() ACPI / dock: Walk list in reverse order during removal of devices ACPI / dock: Rework and simplify find_dock_devices() ACPI / dock: Drop the hp_lock mutex from struct dock_station ACPI: simplify acpiphp driver with new helper functions ACPI: simplify dock driver with new helper functions ACPI: Export acpi_(bay)|(dock)_match() from scan.c ACPI: introduce two helper functions for _EJ0 and _LCK ACPI: introduce helper function acpi_execute_simple_method() ACPI: introduce helper function acpi_has_method() ACPI / dock: simplify dock_create_acpi_device() ACPI / dock: mark initialization functions with __init ACPI / dock: drop redundant spin lock in dock station object ...
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/hotplug/acpiphp.h1
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c48
2 files changed, 12 insertions, 37 deletions
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index 6fdd49c6f0b9..6c781edabcc6 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -122,7 +122,6 @@ struct acpiphp_func {
struct acpiphp_slot *slot; /* parent */
struct list_head sibling;
- struct notifier_block nb;
acpi_handle handle;
u8 function; /* pci function# */
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 59df8575a48c..8bfad0dc29ab 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -119,15 +119,14 @@ static void free_bridge(struct kref *kref)
* TBD - figure out a way to only call fixups for
* systems that require them.
*/
-static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
- void *v)
+static void post_dock_fixups(acpi_handle not_used, u32 event, void *data)
{
- struct acpiphp_func *func = container_of(nb, struct acpiphp_func, nb);
+ struct acpiphp_func *func = data;
struct pci_bus *bus = func->slot->bridge->pci_bus;
u32 buses;
if (!bus->self)
- return NOTIFY_OK;
+ return;
/* fixup bad _DCK function that rewrites
* secondary bridge on slot
@@ -143,11 +142,11 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
| ((unsigned int)(bus->busn_res.end) << 16);
pci_write_config_dword(bus->self, PCI_PRIMARY_BUS, buses);
}
- return NOTIFY_OK;
}
static const struct acpi_dock_ops acpiphp_dock_ops = {
+ .fixup = post_dock_fixups,
.handler = hotplug_event_func,
};
@@ -201,7 +200,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
struct acpiphp_bridge *bridge = (struct acpiphp_bridge *)context;
struct acpiphp_slot *slot;
struct acpiphp_func *newfunc;
- acpi_handle tmp;
acpi_status status = AE_OK;
unsigned long long adr, sun;
int device, function, retval, found = 0;
@@ -232,19 +230,19 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
newfunc->handle = handle;
newfunc->function = function;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_EJ0", &tmp)))
+ if (acpi_has_method(handle, "_EJ0"))
newfunc->flags = FUNC_HAS_EJ0;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_STA", &tmp)))
+ if (acpi_has_method(handle, "_STA"))
newfunc->flags |= FUNC_HAS_STA;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_PS0", &tmp)))
+ if (acpi_has_method(handle, "_PS0"))
newfunc->flags |= FUNC_HAS_PS0;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_PS3", &tmp)))
+ if (acpi_has_method(handle, "_PS3"))
newfunc->flags |= FUNC_HAS_PS3;
- if (ACPI_SUCCESS(acpi_get_handle(handle, "_DCK", &tmp)))
+ if (acpi_has_method(handle, "_DCK"))
newfunc->flags |= FUNC_HAS_DCK;
status = acpi_evaluate_integer(handle, "_SUN", NULL, &sun);
@@ -316,14 +314,6 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
&acpiphp_dock_ops, newfunc,
acpiphp_dock_init, acpiphp_dock_release))
dbg("failed to register dock device\n");
-
- /* we need to be notified when dock events happen
- * outside of the hotplug operation, since we may
- * need to do fixups before we can hotplug.
- */
- newfunc->nb.notifier_call = post_dock_fixups;
- if (register_dock_notifier(&newfunc->nb))
- dbg("failed to register a dock notifier");
}
/* install notify handler */
@@ -473,7 +463,6 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
list_for_each_entry(func, &slot->funcs, sibling) {
if (is_dock_device(func->handle)) {
unregister_hotplug_dock_device(func->handle);
- unregister_dock_notifier(&func->nb);
}
if (!(func->flags & FUNC_HAS_DCK)) {
status = acpi_remove_notify_handler(func->handle,
@@ -843,25 +832,14 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot)
*/
int acpiphp_eject_slot(struct acpiphp_slot *slot)
{
- acpi_status status;
struct acpiphp_func *func;
- struct acpi_object_list arg_list;
- union acpi_object arg;
list_for_each_entry(func, &slot->funcs, sibling) {
/* We don't want to call _EJ0 on non-existing functions. */
if ((func->flags & FUNC_HAS_EJ0)) {
- /* _EJ0 method take one argument */
- arg_list.count = 1;
- arg_list.pointer = &arg;
- arg.type = ACPI_TYPE_INTEGER;
- arg.integer.value = 1;
-
- status = acpi_evaluate_object(func->handle, "_EJ0", &arg_list, NULL);
- if (ACPI_FAILURE(status)) {
- warn("%s: _EJ0 failed\n", __func__);
+ if (ACPI_FAILURE(acpi_evaluate_ej0(func->handle)))
return -1;
- } else
+ else
break;
}
}
@@ -1171,7 +1149,6 @@ static void handle_hotplug_event_func(acpi_handle handle, u32 type,
*/
void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle)
{
- acpi_handle dummy_handle;
struct acpiphp_bridge *bridge;
if (acpiphp_disabled)
@@ -1200,8 +1177,7 @@ void acpiphp_enumerate_slots(struct pci_bus *bus, acpi_handle handle)
get_device(&bus->dev);
if (!pci_is_root_bus(bridge->pci_bus) &&
- ACPI_SUCCESS(acpi_get_handle(bridge->handle,
- "_EJ0", &dummy_handle))) {
+ acpi_has_method(bridge->handle, "_EJ0")) {
dbg("found ejectable p2p bridge\n");
bridge->flags |= BRIDGE_HAS_EJ0;
bridge->func = acpiphp_bridge_handle_to_function(handle);