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-rw-r--r--drivers/base/class.c21
-rw-r--r--drivers/base/core.c203
-rw-r--r--drivers/base/dd.c21
-rw-r--r--drivers/base/firmware_class.c2
-rw-r--r--drivers/base/platform.c11
5 files changed, 169 insertions, 89 deletions
diff --git a/drivers/base/class.c b/drivers/base/class.c
index 8bf2ca2e56b..96def1ddba1 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -364,7 +364,7 @@ char *make_class_name(const char *name, struct kobject *kobj)
class_name = kmalloc(size, GFP_KERNEL);
if (!class_name)
- return ERR_PTR(-ENOMEM);
+ return NULL;
strcpy(class_name, name);
strcat(class_name, ":");
@@ -411,8 +411,11 @@ static int make_deprecated_class_device_links(struct class_device *class_dev)
return 0;
class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
- error = sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj,
- class_name);
+ if (class_name)
+ error = sysfs_create_link(&class_dev->dev->kobj,
+ &class_dev->kobj, class_name);
+ else
+ error = -ENOMEM;
kfree(class_name);
return error;
}
@@ -425,7 +428,8 @@ static void remove_deprecated_class_device_links(struct class_device *class_dev)
return;
class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
- sysfs_remove_link(&class_dev->dev->kobj, class_name);
+ if (class_name)
+ sysfs_remove_link(&class_dev->dev->kobj, class_name);
kfree(class_name);
}
#else
@@ -863,9 +867,12 @@ int class_device_rename(struct class_device *class_dev, char *new_name)
if (class_dev->dev) {
new_class_name = make_class_name(class_dev->class->name,
&class_dev->kobj);
- sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj,
- new_class_name);
- sysfs_remove_link(&class_dev->dev->kobj, old_class_name);
+ if (new_class_name)
+ sysfs_create_link(&class_dev->dev->kobj,
+ &class_dev->kobj, new_class_name);
+ if (old_class_name)
+ sysfs_remove_link(&class_dev->dev->kobj,
+ old_class_name);
}
#endif
class_device_put(class_dev);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 67b79a7592a..e13614241c9 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -95,6 +95,8 @@ static void device_release(struct kobject * kobj)
if (dev->release)
dev->release(dev);
+ else if (dev->type && dev->type->release)
+ dev->type->release(dev);
else if (dev->class && dev->class->dev_release)
dev->class->dev_release(dev);
else {
@@ -154,25 +156,47 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
"MINOR=%u", MINOR(dev->devt));
}
-#ifdef CONFIG_SYSFS_DEPRECATED
- /* add bus name (same as SUBSYSTEM, deprecated) */
- if (dev->bus)
- add_uevent_var(envp, num_envp, &i,
- buffer, buffer_size, &length,
- "PHYSDEVBUS=%s", dev->bus->name);
-#endif
-
- /* add driver name (PHYSDEV* values are deprecated)*/
- if (dev->driver) {
+ if (dev->driver)
add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
"DRIVER=%s", dev->driver->name);
+
#ifdef CONFIG_SYSFS_DEPRECATED
+ if (dev->class) {
+ struct device *parent = dev->parent;
+
+ /* find first bus device in parent chain */
+ while (parent && !parent->bus)
+ parent = parent->parent;
+ if (parent && parent->bus) {
+ const char *path;
+
+ path = kobject_get_path(&parent->kobj, GFP_KERNEL);
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVPATH=%s", path);
+ kfree(path);
+
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVBUS=%s", parent->bus->name);
+
+ if (parent->driver)
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVDRIVER=%s", parent->driver->name);
+ }
+ } else if (dev->bus) {
add_uevent_var(envp, num_envp, &i,
buffer, buffer_size, &length,
- "PHYSDEVDRIVER=%s", dev->driver->name);
-#endif
+ "PHYSDEVBUS=%s", dev->bus->name);
+
+ if (dev->driver)
+ add_uevent_var(envp, num_envp, &i,
+ buffer, buffer_size, &length,
+ "PHYSDEVDRIVER=%s", dev->driver->name);
}
+#endif
/* terminate, set to next free slot, shrink available space */
envp[i] = NULL;
@@ -184,19 +208,25 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp,
if (dev->bus && dev->bus->uevent) {
/* have the bus specific function add its stuff */
retval = dev->bus->uevent(dev, envp, num_envp, buffer, buffer_size);
- if (retval) {
- pr_debug ("%s - uevent() returned %d\n",
+ if (retval)
+ pr_debug ("%s: bus uevent() returned %d\n",
__FUNCTION__, retval);
- }
}
if (dev->class && dev->class->dev_uevent) {
/* have the class specific function add its stuff */
retval = dev->class->dev_uevent(dev, envp, num_envp, buffer, buffer_size);
- if (retval) {
- pr_debug("%s - dev_uevent() returned %d\n",
- __FUNCTION__, retval);
- }
+ if (retval)
+ pr_debug("%s: class uevent() returned %d\n",
+ __FUNCTION__, retval);
+ }
+
+ if (dev->type && dev->type->uevent) {
+ /* have the device type specific fuction add its stuff */
+ retval = dev->type->uevent(dev, envp, num_envp, buffer, buffer_size);
+ if (retval)
+ pr_debug("%s: dev_type uevent() returned %d\n",
+ __FUNCTION__, retval);
}
return retval;
@@ -247,37 +277,50 @@ static void device_remove_groups(struct device *dev)
static int device_add_attrs(struct device *dev)
{
struct class *class = dev->class;
+ struct device_type *type = dev->type;
int error = 0;
int i;
- if (!class)
- return 0;
-
- if (class->dev_attrs) {
+ if (class && class->dev_attrs) {
for (i = 0; attr_name(class->dev_attrs[i]); i++) {
error = device_create_file(dev, &class->dev_attrs[i]);
if (error)
break;
}
+ if (error)
+ while (--i >= 0)
+ device_remove_file(dev, &class->dev_attrs[i]);
}
- if (error)
- while (--i >= 0)
- device_remove_file(dev, &class->dev_attrs[i]);
+
+ if (type && type->attrs) {
+ for (i = 0; attr_name(type->attrs[i]); i++) {
+ error = device_create_file(dev, &type->attrs[i]);
+ if (error)
+ break;
+ }
+ if (error)
+ while (--i >= 0)
+ device_remove_file(dev, &type->attrs[i]);
+ }
+
return error;
}
static void device_remove_attrs(struct device *dev)
{
struct class *class = dev->class;
+ struct device_type *type = dev->type;
int i;
- if (!class)
- return;
-
- if (class->dev_attrs) {
+ if (class && class->dev_attrs) {
for (i = 0; attr_name(class->dev_attrs[i]); i++)
device_remove_file(dev, &class->dev_attrs[i]);
}
+
+ if (type && type->attrs) {
+ for (i = 0; attr_name(type->attrs[i]); i++)
+ device_remove_file(dev, &type->attrs[i]);
+ }
}
@@ -390,22 +433,23 @@ void device_initialize(struct device *dev)
}
#ifdef CONFIG_SYSFS_DEPRECATED
-static int setup_parent(struct device *dev, struct device *parent)
+static struct kobject * get_device_parent(struct device *dev,
+ struct device *parent)
{
/* Set the parent to the class, not the parent device */
/* this keeps sysfs from having a symlink to make old udevs happy */
if (dev->class)
- dev->kobj.parent = &dev->class->subsys.kset.kobj;
+ return &dev->class->subsys.kset.kobj;
else if (parent)
- dev->kobj.parent = &parent->kobj;
+ return &parent->kobj;
- return 0;
+ return NULL;
}
#else
-static int virtual_device_parent(struct device *dev)
+static struct kobject * virtual_device_parent(struct device *dev)
{
if (!dev->class)
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
if (!dev->class->virtual_dir) {
static struct kobject *virtual_dir = NULL;
@@ -415,25 +459,31 @@ static int virtual_device_parent(struct device *dev)
dev->class->virtual_dir = kobject_add_dir(virtual_dir, dev->class->name);
}
- dev->kobj.parent = dev->class->virtual_dir;
- return 0;
+ return dev->class->virtual_dir;
}
-static int setup_parent(struct device *dev, struct device *parent)
+static struct kobject * get_device_parent(struct device *dev,
+ struct device *parent)
{
- int error;
-
/* if this is a class device, and has no parent, create one */
if ((dev->class) && (parent == NULL)) {
- error = virtual_device_parent(dev);
- if (error)
- return error;
+ return virtual_device_parent(dev);
} else if (parent)
- dev->kobj.parent = &parent->kobj;
+ return &parent->kobj;
+ return NULL;
+}
+#endif
+static int setup_parent(struct device *dev, struct device *parent)
+{
+ struct kobject *kobj;
+ kobj = get_device_parent(dev, parent);
+ if (IS_ERR(kobj))
+ return PTR_ERR(kobj);
+ if (kobj)
+ dev->kobj.parent = kobj;
return 0;
}
-#endif
/**
* device_add - add device to device hierarchy.
@@ -520,9 +570,13 @@ int device_add(struct device *dev)
&dev->kobj, dev->bus_id);
#ifdef CONFIG_SYSFS_DEPRECATED
if (parent) {
- sysfs_create_link(&dev->kobj, &dev->parent->kobj, "device");
- class_name = make_class_name(dev->class->name, &dev->kobj);
- sysfs_create_link(&dev->parent->kobj, &dev->kobj, class_name);
+ sysfs_create_link(&dev->kobj, &dev->parent->kobj,
+ "device");
+ class_name = make_class_name(dev->class->name,
+ &dev->kobj);
+ if (class_name)
+ sysfs_create_link(&dev->parent->kobj,
+ &dev->kobj, class_name);
}
#endif
}
@@ -535,7 +589,8 @@ int device_add(struct device *dev)
goto PMError;
if ((error = bus_add_device(dev)))
goto BusError;
- kobject_uevent(&dev->kobj, KOBJ_ADD);
+ if (!dev->uevent_suppress)
+ kobject_uevent(&dev->kobj, KOBJ_ADD);
if ((error = bus_attach_device(dev)))
goto AttachError;
if (parent)
@@ -665,7 +720,9 @@ void device_del(struct device * dev)
if (parent) {
char *class_name = make_class_name(dev->class->name,
&dev->kobj);
- sysfs_remove_link(&dev->parent->kobj, class_name);
+ if (class_name)
+ sysfs_remove_link(&dev->parent->kobj,
+ class_name);
kfree(class_name);
sysfs_remove_link(&dev->kobj, "device");
}
@@ -968,20 +1025,25 @@ static int device_move_class_links(struct device *dev,
class_name = make_class_name(dev->class->name, &dev->kobj);
if (!class_name) {
- error = PTR_ERR(class_name);
- class_name = NULL;
+ error = -ENOMEM;
goto out;
}
if (old_parent) {
sysfs_remove_link(&dev->kobj, "device");
sysfs_remove_link(&old_parent->kobj, class_name);
}
- error = sysfs_create_link(&dev->kobj, &new_parent->kobj, "device");
- if (error)
- goto out;
- error = sysfs_create_link(&new_parent->kobj, &dev->kobj, class_name);
- if (error)
- sysfs_remove_link(&dev->kobj, "device");
+ if (new_parent) {
+ error = sysfs_create_link(&dev->kobj, &new_parent->kobj,
+ "device");
+ if (error)
+ goto out;
+ error = sysfs_create_link(&new_parent->kobj, &dev->kobj,
+ class_name);
+ if (error)
+ sysfs_remove_link(&dev->kobj, "device");
+ }
+ else
+ error = 0;
out:
kfree(class_name);
return error;
@@ -993,29 +1055,28 @@ out:
/**
* device_move - moves a device to a new parent
* @dev: the pointer to the struct device to be moved
- * @new_parent: the new parent of the device
+ * @new_parent: the new parent of the device (can by NULL)
*/
int device_move(struct device *dev, struct device *new_parent)
{
int error;
struct device *old_parent;
+ struct kobject *new_parent_kobj;
dev = get_device(dev);
if (!dev)
return -EINVAL;
- if (!device_is_registered(dev)) {
- error = -EINVAL;
- goto out;
- }
new_parent = get_device(new_parent);
- if (!new_parent) {
- error = -EINVAL;
+ new_parent_kobj = get_device_parent (dev, new_parent);
+ if (IS_ERR(new_parent_kobj)) {
+ error = PTR_ERR(new_parent_kobj);
+ put_device(new_parent);
goto out;
}
pr_debug("DEVICE: moving '%s' to '%s'\n", dev->bus_id,
- new_parent->bus_id);
- error = kobject_move(&dev->kobj, &new_parent->kobj);
+ new_parent ? new_parent->bus_id : "<NULL>");
+ error = kobject_move(&dev->kobj, new_parent_kobj);
if (error) {
put_device(new_parent);
goto out;
@@ -1024,7 +1085,8 @@ int device_move(struct device *dev, struct device *new_parent)
dev->parent = new_parent;
if (old_parent)
klist_remove(&dev->knode_parent);
- klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
+ if (new_parent)
+ klist_add_tail(&dev->knode_parent, &new_parent->klist_children);
if (!dev->class)
goto out_put;
error = device_move_class_links(dev, old_parent, new_parent);
@@ -1032,7 +1094,8 @@ int device_move(struct device *dev, struct device *new_parent)
/* We ignore errors on cleanup since we're hosed anyway... */
device_move_class_links(dev, new_parent, old_parent);
if (!kobject_move(&dev->kobj, &old_parent->kobj)) {
- klist_remove(&dev->knode_parent);
+ if (new_parent)
+ klist_remove(&dev->knode_parent);
if (old_parent)
klist_add_tail(&dev->knode_parent,
&old_parent->klist_children);
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 510e7884975..b5bf243d9cd 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -86,8 +86,12 @@ static void driver_sysfs_remove(struct device *dev)
*/
int device_bind_driver(struct device *dev)
{
- driver_bound(dev);
- return driver_sysfs_add(dev);
+ int ret;
+
+ ret = driver_sysfs_add(dev);
+ if (!ret)
+ driver_bound(dev);
+ return ret;
}
struct stupid_thread_structure {
@@ -136,18 +140,17 @@ probe_failed:
driver_sysfs_remove(dev);
dev->driver = NULL;
- if (ret == -ENODEV || ret == -ENXIO) {
- /* Driver matched, but didn't support device
- * or device not found.
- * Not an error; keep going.
- */
- ret = 0;
- } else {
+ if (ret != -ENODEV && ret != -ENXIO) {
/* driver matched but the probe failed */
printk(KERN_WARNING
"%s: probe of %s failed with error %d\n",
drv->name, dev->bus_id, ret);
}
+ /*
+ * Ignore errors returned by ->probe so that the next driver can try
+ * its luck.
+ */
+ ret = 0;
done:
kfree(data);
atomic_dec(&probe_count);
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 64558f45e6b..c0a979a5074 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -35,7 +35,7 @@ enum {
FW_STATUS_READY_NOHOTPLUG,
};
-static int loading_timeout = 10; /* In seconds */
+static int loading_timeout = 60; /* In seconds */
/* fw_lock could be moved to 'struct firmware_priv' but since it is just
* guarding for corner cases a global lock should be OK */
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index f9c903ba9fc..30480f6f2af 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -611,8 +611,15 @@ EXPORT_SYMBOL_GPL(platform_bus_type);
int __init platform_bus_init(void)
{
- device_register(&platform_bus);
- return bus_register(&platform_bus_type);
+ int error;
+
+ error = device_register(&platform_bus);
+ if (error)
+ return error;
+ error = bus_register(&platform_bus_type);
+ if (error)
+ device_unregister(&platform_bus);
+ return error;
}
#ifndef ARCH_HAS_DMA_GET_REQUIRED_MASK
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-08 21:15:38 +0000