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ACPI / hotplug / PCI: Drop handle field from struct acpiphp_func

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The ACPI handle stored in struct acpiphp_func is also stored in the
struct acpiphp_context object containing it and it is trivial to get
from a struct acpiphp_func pointer to the handle field of the outer
struct acpiphp_context.

Hence, the handle field of struct acpiphp_func is redundant, so drop
it and provide a helper function, func_to_handle(), allowing it
users to get the ACPI handle for the given struct acpiphp_func
pointer.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2013-07-13 23:27:25 +02:00
parent bd4674dfc5
commit 5a3bc573ae
2 changed files with 36 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/pci/hotplug/acpiphp.h
View File

@ -119,7 +119,6 @@ struct acpiphp_func {
struct acpiphp_slot *slot; /* parent */
struct list_head sibling;
acpi_handle handle;
u8 function; /* pci function# */
u32 flags; /* see below */
@ -137,6 +136,11 @@ static inline struct acpiphp_context *func_to_context(struct acpiphp_func *func)
return container_of(func, struct acpiphp_context, func);
}
static inline acpi_handle func_to_handle(struct acpiphp_func *func)
{
return func_to_context(func)->handle;
}
/*
* struct acpiphp_attention_info - device specific attention registration
*

54
drivers/pci/hotplug/acpiphp_glue.c
View File

@ -293,7 +293,6 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
return AE_NOT_EXIST;
}
newfunc = &context->func;
newfunc->handle = handle;
newfunc->function = function;
mutex_unlock(&acpiphp_context_lock);
@ -425,11 +424,13 @@ static void cleanup_bridge(struct acpiphp_bridge *bridge)
list_for_each_entry(slot, &bridge->slots, node) {
list_for_each_entry(func, &slot->funcs, sibling) {
if (is_dock_device(func->handle)) {
unregister_hotplug_dock_device(func->handle);
}
acpi_handle handle = func_to_handle(func);
if (is_dock_device(handle))
unregister_hotplug_dock_device(handle);
if (!(func->flags & FUNC_HAS_DCK)) {
status = acpi_remove_notify_handler(func->handle,
status = acpi_remove_notify_handler(handle,
ACPI_SYSTEM_NOTIFY,
handle_hotplug_event);
if (ACPI_FAILURE(status))
@ -457,7 +458,8 @@ static int power_on_slot(struct acpiphp_slot *slot)
list_for_each_entry(func, &slot->funcs, sibling) {
if (func->flags & FUNC_HAS_PS0) {
dbg("%s: executing _PS0\n", __func__);
status = acpi_evaluate_object(func->handle, "_PS0", NULL, NULL);
status = acpi_evaluate_object(func_to_handle(func),
"_PS0", NULL, NULL);
if (ACPI_FAILURE(status)) {
warn("%s: _PS0 failed\n", __func__);
retval = -1;
@ -489,7 +491,8 @@ static int power_off_slot(struct acpiphp_slot *slot)
list_for_each_entry(func, &slot->funcs, sibling) {
if (func->flags & FUNC_HAS_PS3) {
status = acpi_evaluate_object(func->handle, "_PS3", NULL, NULL);
status = acpi_evaluate_object(func_to_handle(func),
"_PS3", NULL, NULL);
if (ACPI_FAILURE(status)) {
warn("%s: _PS3 failed\n", __func__);
retval = -1;
@ -543,10 +546,11 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus)
*/
static int acpiphp_bus_add(struct acpiphp_func *func)
{
acpi_handle handle = func_to_handle(func);
struct acpi_device *device;
int ret_val;
if (!acpi_bus_get_device(func->handle, &device)) {
if (!acpi_bus_get_device(handle, &device)) {
dbg("bus exists... trim\n");
/* this shouldn't be in here, so remove
* the bus then re-add it...
@ -554,9 +558,9 @@ static int acpiphp_bus_add(struct acpiphp_func *func)
acpi_bus_trim(device);
}
ret_val = acpi_bus_scan(func->handle);
ret_val = acpi_bus_scan(handle);
if (!ret_val)
ret_val = acpi_bus_get_device(func->handle, &device);
ret_val = acpi_bus_get_device(handle, &device);
if (ret_val)
dbg("error adding bus, %x\n", -ret_val);
@ -598,7 +602,8 @@ static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
params[1].type = ACPI_TYPE_INTEGER;
params[1].integer.value = 1;
/* _REG is optional, we don't care about if there is failure */
acpi_evaluate_object(func->handle, "_REG", &arg_list, NULL);
acpi_evaluate_object(func_to_handle(func), "_REG", &arg_list,
NULL);
}
}
@ -739,9 +744,8 @@ static int disable_device(struct acpiphp_slot *slot)
pci_dev_put(pdev);
}
list_for_each_entry(func, &slot->funcs, sibling) {
acpiphp_bus_trim(func->handle);
}
list_for_each_entry(func, &slot->funcs, sibling)
acpiphp_bus_trim(func_to_handle(func));
slot->flags &= (~SLOT_ENABLED);
@ -763,17 +767,20 @@ static int disable_device(struct acpiphp_slot *slot)
*/
static unsigned int get_slot_status(struct acpiphp_slot *slot)
{
acpi_status status;
unsigned long long sta = 0;
u32 dvid;
struct acpiphp_func *func;
list_for_each_entry(func, &slot->funcs, sibling) {
if (func->flags & FUNC_HAS_STA) {
status = acpi_evaluate_integer(func->handle, "_STA", NULL, &sta);
acpi_status status;
status = acpi_evaluate_integer(func_to_handle(func),
"_STA", NULL, &sta);
if (ACPI_SUCCESS(status) && sta)
break;
} else {
u32 dvid;
pci_bus_read_config_dword(slot->bridge->pci_bus,
PCI_DEVFN(slot->device,
func->function),
@ -798,12 +805,13 @@ int acpiphp_eject_slot(struct acpiphp_slot *slot)
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)) {
if (ACPI_FAILURE(acpi_evaluate_ej0(func->handle)))
return -1;
else
break;
}
if (!(func->flags & FUNC_HAS_EJ0))
continue;
if (ACPI_FAILURE(acpi_evaluate_ej0(func_to_handle(func))))
return -1;
else
break;
}
return 0;
}