Commit c309dbb4 authored by Myron Stowe's avatar Myron Stowe Committed by Bjorn Helgaas
Browse files

PCI/ACPI: Remove support of ACPI PCI subdrivers 



Both sub-drivers of the "PCI Root Bridge ("pci_bridge")" driver, "acpiphp"
and "pci_slot", have been converted to hook directly into the PCI core.

With the conversions there are no remaining usages of the 'struct
acpi_pci_driver' list based infrastructure.  This patch removes it.

Signed-off-by: default avatarMyron Stowe <myron.stowe@redhat.com>
Signed-off-by: default avatarJiang Liu <jiang.liu@huawei.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarYinghai Lu <yinghai@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Toshi Kani <toshi.kani@hp.com>
parent 3d54a316

drivers/acpi/pci_root.c

+1 −47
Original line number Diff line number Diff line
@@ -65,44 +65,12 @@ static struct acpi_scan_handler pci_root_handler = { 
	.detach = acpi_pci_root_remove,

};



/* Lock to protect both acpi_pci_roots and acpi_pci_drivers lists */

/* Lock to protect both acpi_pci_roots lists */

static DEFINE_MUTEX(acpi_pci_root_lock);

static LIST_HEAD(acpi_pci_roots);

static LIST_HEAD(acpi_pci_drivers);



static DEFINE_MUTEX(osc_lock);



int acpi_pci_register_driver(struct acpi_pci_driver *driver)

{

	int n = 0;

	struct acpi_pci_root *root;



	mutex_lock(&acpi_pci_root_lock);

	list_add_tail(&driver->node, &acpi_pci_drivers);

	if (driver->add)

		list_for_each_entry(root, &acpi_pci_roots, node) {

			driver->add(root);

			n++;

		}

	mutex_unlock(&acpi_pci_root_lock);



	return n;

}

EXPORT_SYMBOL(acpi_pci_register_driver);



void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)

{

	struct acpi_pci_root *root;



	mutex_lock(&acpi_pci_root_lock);

	list_del(&driver->node);

	if (driver->remove)

		list_for_each_entry(root, &acpi_pci_roots, node)

			driver->remove(root);

	mutex_unlock(&acpi_pci_root_lock);

}

EXPORT_SYMBOL(acpi_pci_unregister_driver);



/**

 * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge

 * @handle - the ACPI CA node in question.
@@ -413,7 +381,6 @@ static int acpi_pci_root_add(struct acpi_device *device, 
	acpi_status status;

	int result;

	struct acpi_pci_root *root;

	struct acpi_pci_driver *driver;

	u32 flags, base_flags;

	bool is_osc_granted = false;
@@ -573,12 +540,6 @@ static int acpi_pci_root_add(struct acpi_device *device, 
		pci_assign_unassigned_bus_resources(root->bus);

	}



	mutex_lock(&acpi_pci_root_lock);

	list_for_each_entry(driver, &acpi_pci_drivers, node)

		if (driver->add)

			driver->add(root);

	mutex_unlock(&acpi_pci_root_lock);



	/* need to after hot-added ioapic is registered */

	if (system_state != SYSTEM_BOOTING)

		pci_enable_bridges(root->bus);
@@ -599,16 +560,9 @@ end: 
static void acpi_pci_root_remove(struct acpi_device *device)

{

	struct acpi_pci_root *root = acpi_driver_data(device);

	struct acpi_pci_driver *driver;



	pci_stop_root_bus(root->bus);



	mutex_lock(&acpi_pci_root_lock);

	list_for_each_entry_reverse(driver, &acpi_pci_drivers, node)

		if (driver->remove)

			driver->remove(root);

	mutex_unlock(&acpi_pci_root_lock);



	device_set_run_wake(root->bus->bridge, false);

	pci_acpi_remove_bus_pm_notifier(device);

include/linux/acpi.h

+0 −9
Original line number Diff line number Diff line
@@ -152,15 +152,6 @@ void acpi_penalize_isa_irq(int irq, int active); 


void acpi_pci_irq_disable (struct pci_dev *dev);



struct acpi_pci_driver {

	struct list_head node;

	int (*add)(struct acpi_pci_root *root);

	void (*remove)(struct acpi_pci_root *root);

};



int acpi_pci_register_driver(struct acpi_pci_driver *driver);

void acpi_pci_unregister_driver(struct acpi_pci_driver *driver);



extern int ec_read(u8 addr, u8 *val);

extern int ec_write(u8 addr, u8 val);

extern int ec_transaction(u8 command,

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