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[PATCH] I2O: remove class interface

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I2O: remove i2o_device_class_interface misuse

The intent of class interfaces was to provide different
'views' at the same object, not just run some code every
time a new class device is registered. Kill interface
structure, make class core register default attributes
and set up sysfs links right when registering class
devices.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dmitry Torokhov 2005-09-15 02:01:32 -05:00 committed by Greg Kroah-Hartman
parent dbe9035d4f
commit 4f5ca09e0b
1 changed files with 122 additions and 133 deletions
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255
drivers/message/i2o/device.c
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@ -45,10 +45,10 @@ static inline int i2o_device_issue_claim(struct i2o_device *dev, u32 cmd,
writel(type, &msg->body[0]);
return i2o_msg_post_wait(dev->iop, m, 60);
};
}
/**
* i2o_device_claim - claim a device for use by an OSM
* i2o_device_claim - claim a device for use by an OSM
* @dev: I2O device to claim
* @drv: I2O driver which wants to claim the device
*
@ -73,7 +73,7 @@ int i2o_device_claim(struct i2o_device *dev)
up(&dev->lock);
return rc;
};
}
/**
* i2o_device_claim_release - release a device that the OSM is using
@ -119,7 +119,8 @@ int i2o_device_claim_release(struct i2o_device *dev)
up(&dev->lock);
return rc;
};
}
/**
* i2o_device_release - release the memory for a I2O device
@ -135,39 +136,62 @@ static void i2o_device_release(struct device *dev)
pr_debug("i2o: device %s released\n", dev->bus_id);
kfree(i2o_dev);
};
}
/**
* i2o_device_class_release - Remove I2O device attributes
* i2o_device_class_release - I2O class device release function
* @cd: I2O class device which is added to the I2O device class
*
* Removes attributes from the I2O device again. Also search each device
* on the controller for I2O devices which refert to this device as parent
* or user and remove this links also.
* The function is just a stub - memory will be freed when
* associated I2O device is released.
*/
static void i2o_device_class_release(struct class_device *cd)
{
struct i2o_device *i2o_dev, *tmp;
struct i2o_controller *c;
/* empty */
}
i2o_dev = to_i2o_device(cd->dev);
c = i2o_dev->iop;
/**
* i2o_device_class_show_class_id - Displays class id of I2O device
* @cd: class device of which the class id should be displayed
* @buf: buffer into which the class id should be printed
*
* Returns the number of bytes which are printed into the buffer.
*/
static ssize_t i2o_device_class_show_class_id(struct class_device *cd,
char *buf)
{
struct i2o_device *dev = to_i2o_device(cd->dev);
sysfs_remove_link(&i2o_dev->device.kobj, "parent");
sysfs_remove_link(&i2o_dev->device.kobj, "user");
sprintf(buf, "0x%03x\n", dev->lct_data.class_id);
return strlen(buf) + 1;
}
list_for_each_entry(tmp, &c->devices, list) {
if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
sysfs_remove_link(&tmp->device.kobj, "parent");
if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
sysfs_remove_link(&tmp->device.kobj, "user");
}
/**
* i2o_device_class_show_tid - Displays TID of I2O device
* @cd: class device of which the TID should be displayed
* @buf: buffer into which the class id should be printed
*
* Returns the number of bytes which are printed into the buffer.
*/
static ssize_t i2o_device_class_show_tid(struct class_device *cd, char *buf)
{
struct i2o_device *dev = to_i2o_device(cd->dev);
sprintf(buf, "0x%03x\n", dev->lct_data.tid);
return strlen(buf) + 1;
}
static struct class_device_attribute i2o_device_class_attrs[] = {
__ATTR(class_id, S_IRUGO, i2o_device_class_show_class_id, NULL),
__ATTR(tid, S_IRUGO, i2o_device_class_show_tid, NULL),
__ATTR_NULL
};
/* I2O device class */
static struct class i2o_device_class = {
.name = "i2o_device",
.release = i2o_device_class_release
.name = "i2o_device",
.release = i2o_device_class_release,
.class_dev_attrs = i2o_device_class_attrs,
};
/**
@ -197,7 +221,67 @@ static struct i2o_device *i2o_device_alloc(void)
dev->classdev.dev = &dev->device;
return dev;
};
}
/**
* i2o_setup_sysfs_links - Adds attributes to the I2O device
* @cd: I2O class device which is added to the I2O device class
*
* This function get called when a I2O device is added to the class. It
* creates the attributes for each device and creates user/parent symlink
* if necessary.
*
* Returns 0 on success or negative error code on failure.
*/
static void i2o_setup_sysfs_links(struct i2o_device *i2o_dev)
{
struct i2o_controller *c = i2o_dev->iop;
struct i2o_device *tmp;
/* create user entries for this device */
tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.user_tid);
if (tmp && tmp != i2o_dev)
sysfs_create_link(&i2o_dev->device.kobj,
&tmp->device.kobj, "user");
/* create user entries refering to this device */
list_for_each_entry(tmp, &c->devices, list)
if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid &&
tmp != i2o_dev)
sysfs_create_link(&tmp->device.kobj,
&i2o_dev->device.kobj, "user");
/* create parent entries for this device */
tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.parent_tid);
if (tmp && tmp != i2o_dev)
sysfs_create_link(&i2o_dev->device.kobj,
&tmp->device.kobj, "parent");
/* create parent entries refering to this device */
list_for_each_entry(tmp, &c->devices, list)
if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid &&
tmp != i2o_dev)
sysfs_create_link(&tmp->device.kobj,
&i2o_dev->device.kobj, "parent");
}
static void i2o_remove_sysfs_links(struct i2o_device *i2o_dev)
{
struct i2o_controller *c = i2o_dev->iop;
struct i2o_device *tmp;
sysfs_remove_link(&i2o_dev->device.kobj, "parent");
sysfs_remove_link(&i2o_dev->device.kobj, "user");
list_for_each_entry(tmp, &c->devices, list) {
if (tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
sysfs_remove_link(&tmp->device.kobj, "parent");
if (tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
sysfs_remove_link(&tmp->device.kobj, "user");
}
}
/**
* i2o_device_add - allocate a new I2O device and add it to the IOP
@ -222,6 +306,7 @@ static struct i2o_device *i2o_device_add(struct i2o_controller *c,
}
dev->lct_data = *entry;
dev->iop = c;
snprintf(dev->device.bus_id, BUS_ID_SIZE, "%d:%03x", c->unit,
dev->lct_data.tid);
@ -229,7 +314,6 @@ static struct i2o_device *i2o_device_add(struct i2o_controller *c,
snprintf(dev->classdev.class_id, BUS_ID_SIZE, "%d:%03x", c->unit,
dev->lct_data.tid);
dev->iop = c;
dev->device.parent = &c->device;
device_register(&dev->device);
@ -238,12 +322,14 @@ static struct i2o_device *i2o_device_add(struct i2o_controller *c,
class_device_register(&dev->classdev);
i2o_setup_sysfs_links(dev);
i2o_driver_notify_device_add_all(dev);
pr_debug("i2o: device %s added\n", dev->device.bus_id);
return dev;
};
}
/**
* i2o_device_remove - remove an I2O device from the I2O core
@ -256,10 +342,11 @@ static struct i2o_device *i2o_device_add(struct i2o_controller *c,
void i2o_device_remove(struct i2o_device *i2o_dev)
{
i2o_driver_notify_device_remove_all(i2o_dev);
i2o_remove_sysfs_links(i2o_dev);
class_device_unregister(&i2o_dev->classdev);
list_del(&i2o_dev->list);
device_unregister(&i2o_dev->device);
};
}
/**
* i2o_device_parse_lct - Parse a previously fetched LCT and create devices
@ -337,99 +424,8 @@ int i2o_device_parse_lct(struct i2o_controller *c)
up(&c->lct_lock);
return 0;
};
}
/**
* i2o_device_class_show_class_id - Displays class id of I2O device
* @cd: class device of which the class id should be displayed
* @buf: buffer into which the class id should be printed
*
* Returns the number of bytes which are printed into the buffer.
*/
static ssize_t i2o_device_class_show_class_id(struct class_device *cd,
char *buf)
{
struct i2o_device *dev = to_i2o_device(cd->dev);
sprintf(buf, "0x%03x\n", dev->lct_data.class_id);
return strlen(buf) + 1;
};
/**
* i2o_device_class_show_tid - Displays TID of I2O device
* @cd: class device of which the TID should be displayed
* @buf: buffer into which the class id should be printed
*
* Returns the number of bytes which are printed into the buffer.
*/
static ssize_t i2o_device_class_show_tid(struct class_device *cd, char *buf)
{
struct i2o_device *dev = to_i2o_device(cd->dev);
sprintf(buf, "0x%03x\n", dev->lct_data.tid);
return strlen(buf) + 1;
};
/* I2O device class attributes */
static CLASS_DEVICE_ATTR(class_id, S_IRUGO, i2o_device_class_show_class_id,
NULL);
static CLASS_DEVICE_ATTR(tid, S_IRUGO, i2o_device_class_show_tid, NULL);
/**
* i2o_device_class_add - Adds attributes to the I2O device
* @cd: I2O class device which is added to the I2O device class
*
* This function get called when a I2O device is added to the class. It
* creates the attributes for each device and creates user/parent symlink
* if necessary.
*
* Returns 0 on success or negative error code on failure.
*/
static int i2o_device_class_add(struct class_device *cd)
{
struct i2o_device *i2o_dev, *tmp;
struct i2o_controller *c;
i2o_dev = to_i2o_device(cd->dev);
c = i2o_dev->iop;
class_device_create_file(cd, &class_device_attr_class_id);
class_device_create_file(cd, &class_device_attr_tid);
/* create user entries for this device */
tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.user_tid);
if (tmp && (tmp != i2o_dev))
sysfs_create_link(&i2o_dev->device.kobj, &tmp->device.kobj,
"user");
/* create user entries refering to this device */
list_for_each_entry(tmp, &c->devices, list)
if ((tmp->lct_data.user_tid == i2o_dev->lct_data.tid)
&& (tmp != i2o_dev))
sysfs_create_link(&tmp->device.kobj,
&i2o_dev->device.kobj, "user");
/* create parent entries for this device */
tmp = i2o_iop_find_device(i2o_dev->iop, i2o_dev->lct_data.parent_tid);
if (tmp && (tmp != i2o_dev))
sysfs_create_link(&i2o_dev->device.kobj, &tmp->device.kobj,
"parent");
/* create parent entries refering to this device */
list_for_each_entry(tmp, &c->devices, list)
if ((tmp->lct_data.parent_tid == i2o_dev->lct_data.tid)
&& (tmp != i2o_dev))
sysfs_create_link(&tmp->device.kobj,
&i2o_dev->device.kobj, "parent");
return 0;
};
/* I2O device class interface */
static struct class_interface i2o_device_class_interface = {
.class = &i2o_device_class,
.add = i2o_device_class_add
};
/*
* Run time support routines
@ -553,11 +549,11 @@ int i2o_parm_field_get(struct i2o_device *i2o_dev, int group, int field,
}
/*
* if oper == I2O_PARAMS_TABLE_GET, get from all rows
* if fieldcount == -1 return all fields
* if oper == I2O_PARAMS_TABLE_GET, get from all rows
* if fieldcount == -1 return all fields
* ibuf and ibuflen are unused (use NULL, 0)
* else return specific fields
* ibuf contains fieldindexes
* else return specific fields
* ibuf contains fieldindexes
*
* if oper == I2O_PARAMS_LIST_GET, get from specific rows
* if fieldcount == -1 return all fields
@ -611,14 +607,8 @@ int i2o_parm_table_get(struct i2o_device *dev, int oper, int group,
*/
int i2o_device_init(void)
{
int rc;
rc = class_register(&i2o_device_class);
if (rc)
return rc;
return class_interface_register(&i2o_device_class_interface);
};
return class_register(&i2o_device_class);
}
/**
* i2o_device_exit - I2O devices exit function
@ -627,9 +617,8 @@ int i2o_device_init(void)
*/
void i2o_device_exit(void)
{
class_interface_register(&i2o_device_class_interface);
class_unregister(&i2o_device_class);
};
}
EXPORT_SYMBOL(i2o_device_claim);
EXPORT_SYMBOL(i2o_device_claim_release);