diff options
| author | Kishon Vijay Abraham I <kishon@ti.com> | 2018-04-02 16:29:35 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-05-18 18:40:50 +0300 |
| commit | ef1433f717a2c63747a519d86965d73ff9bd08b3 (patch) | |
| tree | 8b9c4ae16132f1695e70742c24b5e9ca0fc31b11 | |
| parent | ecc57efe9d0d958c8a3a43a4430bf19319e74728 (diff) | |
| download | linux-ef1433f717a2c63747a519d86965d73ff9bd08b3.tar.xz | |
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: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Tested-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
| -rw-r--r-- | drivers/pci/endpoint/pci-epf-core.c | 23 | ||||
| -rw-r--r-- | include/linux/pci-epf.h | 4 |
2 files changed, 23 insertions, 4 deletions
diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c index 465b5f058b6d..523a8cab3bfb 100644 --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -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; } diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h index f7d6f4883f8b..4e7764935fa8 100644 --- a/include/linux/pci-epf.h +++ b/include/linux/pci-epf.h @@ -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; }; |