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Diffstat (limited to 'drivers/base/bus.c')
-rw-r--r--drivers/base/bus.c60
1 files changed, 45 insertions, 15 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index d414331b480e..4c289ab91357 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -17,6 +17,7 @@
#include <linux/init.h>
#include <linux/string.h>
#include <linux/mutex.h>
+#include <linux/sysfs.h>
#include "base.h"
#include "power/power.h"
@@ -165,8 +166,8 @@ static const struct kset_uevent_ops bus_uevent_ops = {
static struct kset *bus_kset;
/* Manually detach a device from its associated driver. */
-static ssize_t driver_unbind(struct device_driver *drv,
- const char *buf, size_t count)
+static ssize_t unbind_store(struct device_driver *drv, const char *buf,
+ size_t count)
{
struct bus_type *bus = bus_get(drv->bus);
struct device *dev;
@@ -185,15 +186,15 @@ static ssize_t driver_unbind(struct device_driver *drv,
bus_put(bus);
return err;
}
-static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind);
+static DRIVER_ATTR_WO(unbind);
/*
* Manually attach a device to a driver.
* Note: the driver must want to bind to the device,
* it is not possible to override the driver's id table.
*/
-static ssize_t driver_bind(struct device_driver *drv,
- const char *buf, size_t count)
+static ssize_t bind_store(struct device_driver *drv, const char *buf,
+ size_t count)
{
struct bus_type *bus = bus_get(drv->bus);
struct device *dev;
@@ -221,7 +222,7 @@ static ssize_t driver_bind(struct device_driver *drv,
bus_put(bus);
return err;
}
-static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind);
+static DRIVER_ATTR_WO(bind);
static ssize_t show_drivers_autoprobe(struct bus_type *bus, char *buf)
{
@@ -460,7 +461,7 @@ static int device_add_attrs(struct bus_type *bus, struct device *dev)
if (!bus->dev_attrs)
return 0;
- for (i = 0; attr_name(bus->dev_attrs[i]); i++) {
+ for (i = 0; bus->dev_attrs[i].attr.name; i++) {
error = device_create_file(dev, &bus->dev_attrs[i]);
if (error) {
while (--i >= 0)
@@ -476,7 +477,7 @@ static void device_remove_attrs(struct bus_type *bus, struct device *dev)
int i;
if (bus->dev_attrs) {
- for (i = 0; attr_name(bus->dev_attrs[i]); i++)
+ for (i = 0; bus->dev_attrs[i].attr.name; i++)
device_remove_file(dev, &bus->dev_attrs[i]);
}
}
@@ -499,6 +500,9 @@ int bus_add_device(struct device *dev)
error = device_add_attrs(bus, dev);
if (error)
goto out_put;
+ error = device_add_groups(dev, bus->dev_groups);
+ if (error)
+ goto out_groups;
error = sysfs_create_link(&bus->p->devices_kset->kobj,
&dev->kobj, dev_name(dev));
if (error)
@@ -513,6 +517,8 @@ int bus_add_device(struct device *dev)
out_subsys:
sysfs_remove_link(&bus->p->devices_kset->kobj, dev_name(dev));
+out_groups:
+ device_remove_groups(dev, bus->dev_groups);
out_id:
device_remove_attrs(bus, dev);
out_put:
@@ -575,6 +581,7 @@ void bus_remove_device(struct device *dev)
sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
dev_name(dev));
device_remove_attrs(dev->bus, dev);
+ device_remove_groups(dev, dev->bus->dev_groups);
if (klist_node_attached(&dev->p->knode_bus))
klist_del(&dev->p->knode_bus);
@@ -590,7 +597,7 @@ static int driver_add_attrs(struct bus_type *bus, struct device_driver *drv)
int i;
if (bus->drv_attrs) {
- for (i = 0; attr_name(bus->drv_attrs[i]); i++) {
+ for (i = 0; bus->drv_attrs[i].attr.name; i++) {
error = driver_create_file(drv, &bus->drv_attrs[i]);
if (error)
goto err;
@@ -610,7 +617,7 @@ static void driver_remove_attrs(struct bus_type *bus,
int i;
if (bus->drv_attrs) {
- for (i = 0; attr_name(bus->drv_attrs[i]); i++)
+ for (i = 0; bus->drv_attrs[i].attr.name; i++)
driver_remove_file(drv, &bus->drv_attrs[i]);
}
}
@@ -659,8 +666,8 @@ static void remove_probe_files(struct bus_type *bus)
bus_remove_file(bus, &bus_attr_drivers_probe);
}
-static ssize_t driver_uevent_store(struct device_driver *drv,
- const char *buf, size_t count)
+static ssize_t uevent_store(struct device_driver *drv, const char *buf,
+ size_t count)
{
enum kobject_action action;
@@ -668,7 +675,7 @@ static ssize_t driver_uevent_store(struct device_driver *drv,
kobject_uevent(&drv->p->kobj, action);
return count;
}
-static DRIVER_ATTR(uevent, S_IWUSR, NULL, driver_uevent_store);
+static DRIVER_ATTR_WO(uevent);
/**
* bus_add_driver - Add a driver to the bus.
@@ -719,6 +726,10 @@ int bus_add_driver(struct device_driver *drv)
printk(KERN_ERR "%s: driver_add_attrs(%s) failed\n",
__func__, drv->name);
}
+ error = driver_add_groups(drv, bus->drv_groups);
+ if (error)
+ printk(KERN_ERR "%s: driver_create_groups(%s) failed\n",
+ __func__, drv->name);
if (!drv->suppress_bind_attrs) {
error = add_bind_files(drv);
@@ -756,6 +767,7 @@ void bus_remove_driver(struct device_driver *drv)
if (!drv->suppress_bind_attrs)
remove_bind_files(drv);
driver_remove_attrs(drv->bus, drv);
+ driver_remove_groups(drv, drv->bus->drv_groups);
driver_remove_file(drv, &driver_attr_uevent);
klist_remove(&drv->p->knode_bus);
pr_debug("bus: '%s': remove driver %s\n", drv->bus->name, drv->name);
@@ -846,7 +858,7 @@ static int bus_add_attrs(struct bus_type *bus)
int i;
if (bus->bus_attrs) {
- for (i = 0; attr_name(bus->bus_attrs[i]); i++) {
+ for (i = 0; bus->bus_attrs[i].attr.name; i++) {
error = bus_create_file(bus, &bus->bus_attrs[i]);
if (error)
goto err;
@@ -865,11 +877,23 @@ static void bus_remove_attrs(struct bus_type *bus)
int i;
if (bus->bus_attrs) {
- for (i = 0; attr_name(bus->bus_attrs[i]); i++)
+ for (i = 0; bus->bus_attrs[i].attr.name; i++)
bus_remove_file(bus, &bus->bus_attrs[i]);
}
}
+static int bus_add_groups(struct bus_type *bus,
+ const struct attribute_group **groups)
+{
+ return sysfs_create_groups(&bus->p->subsys.kobj, groups);
+}
+
+static void bus_remove_groups(struct bus_type *bus,
+ const struct attribute_group **groups)
+{
+ sysfs_remove_groups(&bus->p->subsys.kobj, groups);
+}
+
static void klist_devices_get(struct klist_node *n)
{
struct device_private *dev_prv = to_device_private_bus(n);
@@ -962,10 +986,15 @@ int bus_register(struct bus_type *bus)
retval = bus_add_attrs(bus);
if (retval)
goto bus_attrs_fail;
+ retval = bus_add_groups(bus, bus->bus_groups);
+ if (retval)
+ goto bus_groups_fail;
pr_debug("bus: '%s': registered\n", bus->name);
return 0;
+bus_groups_fail:
+ bus_remove_attrs(bus);
bus_attrs_fail:
remove_probe_files(bus);
bus_probe_files_fail:
@@ -996,6 +1025,7 @@ void bus_unregister(struct bus_type *bus)
if (bus->dev_root)
device_unregister(bus->dev_root);
bus_remove_attrs(bus);
+ bus_remove_groups(bus, bus->bus_groups);
remove_probe_files(bus);
kset_unregister(bus->p->drivers_kset);
kset_unregister(bus->p->devices_kset);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.