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Commit ef1433f7 authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Lorenzo Pieralisi
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PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry 



In order to be able to provide correct driver_data for pci_epf device,
a separate configfs entry for each pci_epf_device_id table entry in
pci_epf_driver is required.

Add support to create configfs entry for each pci_epf_device_id
table entry here.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: default avatarGustavo Pimentel <gustavo.pimentel@synopsys.com>
parent ecc57efe

drivers/pci/endpoint/pci-epf-core.c

+21 −2
Original line number Diff line number Diff line
@@ -15,6 +15,8 @@ 
#include <linux/pci-epf.h>

#include <linux/pci-ep-cfs.h>



static DEFINE_MUTEX(pci_epf_mutex);



static struct bus_type pci_epf_bus_type;

static const struct device_type pci_epf_type;
@@ -143,7 +145,13 @@ EXPORT_SYMBOL_GPL(pci_epf_alloc_space); 
 */

void pci_epf_unregister_driver(struct pci_epf_driver *driver)

{

	pci_ep_cfs_remove_epf_group(driver->group);

	struct config_group *group;



	mutex_lock(&pci_epf_mutex);

	list_for_each_entry(group, &driver->epf_group, group_entry)

		pci_ep_cfs_remove_epf_group(group);

	list_del(&driver->epf_group);

	mutex_unlock(&pci_epf_mutex);

	driver_unregister(&driver->driver);

}

EXPORT_SYMBOL_GPL(pci_epf_unregister_driver);
@@ -159,6 +167,8 @@ int __pci_epf_register_driver(struct pci_epf_driver *driver, 
			      struct module *owner)

{

	int ret;

	struct config_group *group;

	const struct pci_epf_device_id *id;



	if (!driver->ops)

		return -EINVAL;
@@ -173,7 +183,16 @@ int __pci_epf_register_driver(struct pci_epf_driver *driver, 
	if (ret)

		return ret;



	driver->group = pci_ep_cfs_add_epf_group(driver->driver.name);

	INIT_LIST_HEAD(&driver->epf_group);



	id = driver->id_table;

	while (id->name[0]) {

		group = pci_ep_cfs_add_epf_group(id->name);

		mutex_lock(&pci_epf_mutex);

		list_add_tail(&group->group_entry, &driver->epf_group);

		mutex_unlock(&pci_epf_mutex);

		id++;

	}



	return 0;

}

include/linux/pci-epf.h

+2 −2
Original line number Diff line number Diff line
@@ -72,7 +72,7 @@ struct pci_epf_ops { 
 * @driver: PCI EPF driver

 * @ops: set of function pointers for performing EPF operations

 * @owner: the owner of the module that registers the PCI EPF driver

 * @group: configfs group corresponding to the PCI EPF driver

 * @epf_group: list of configfs group corresponding to the PCI EPF driver

 * @id_table: identifies EPF devices for probing

 */

struct pci_epf_driver {
@@ -82,7 +82,7 @@ struct pci_epf_driver { 
	struct device_driver	driver;

	struct pci_epf_ops	*ops;

	struct module		*owner;

	struct config_group	*group;

	struct list_head	epf_group;

	const struct pci_epf_device_id	*id_table;

};