summaryrefslogtreecommitdiff
path: root/drivers/pnp/card.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pnp/card.c')
-rw-r--r--drivers/pnp/card.c158
1 files changed, 83 insertions, 75 deletions
diff --git a/drivers/pnp/card.c b/drivers/pnp/card.c
index dd6384b1efce..6c0440c20e31 100644
--- a/drivers/pnp/card.c
+++ b/drivers/pnp/card.c
@@ -2,7 +2,6 @@
* card.c - contains functions for managing groups of PnP devices
*
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
- *
*/
#include <linux/module.h>
@@ -13,26 +12,31 @@
LIST_HEAD(pnp_cards);
static LIST_HEAD(pnp_card_drivers);
-
-static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv, struct pnp_card * card)
+static const struct pnp_card_device_id *match_card(struct pnp_card_driver *drv,
+ struct pnp_card *card)
{
- const struct pnp_card_device_id * drv_id = drv->id_table;
- while (*drv_id->id){
- if (compare_pnp_id(card->id,drv_id->id)) {
+ const struct pnp_card_device_id *drv_id = drv->id_table;
+
+ while (*drv_id->id) {
+ if (compare_pnp_id(card->id, drv_id->id)) {
int i = 0;
+
for (;;) {
int found;
struct pnp_dev *dev;
- if (i == PNP_MAX_DEVICES || ! *drv_id->devs[i].id)
+
+ if (i == PNP_MAX_DEVICES ||
+ !*drv_id->devs[i].id)
return drv_id;
found = 0;
card_for_each_dev(card, dev) {
- if (compare_pnp_id(dev->id, drv_id->devs[i].id)) {
+ if (compare_pnp_id(dev->id,
+ drv_id->devs[i].id)) {
found = 1;
break;
}
}
- if (! found)
+ if (!found)
break;
i++;
}
@@ -42,14 +46,15 @@ static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv
return NULL;
}
-static void card_remove(struct pnp_dev * dev)
+static void card_remove(struct pnp_dev *dev)
{
dev->card_link = NULL;
}
-static void card_remove_first(struct pnp_dev * dev)
+static void card_remove_first(struct pnp_dev *dev)
{
- struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver);
+ struct pnp_card_driver *drv = to_pnp_card_driver(dev->driver);
+
if (!dev->card || !drv)
return;
if (drv->remove)
@@ -67,7 +72,7 @@ static int card_probe(struct pnp_card *card, struct pnp_card_driver *drv)
if (!drv->probe)
return 0;
- id = match_card(drv,card);
+ id = match_card(drv, card);
if (!id)
return 0;
@@ -94,12 +99,11 @@ static int card_probe(struct pnp_card *card, struct pnp_card_driver *drv)
* pnp_add_card_id - adds an EISA id to the specified card
* @id: pointer to a pnp_id structure
* @card: pointer to the desired card
- *
*/
-
-int pnp_add_card_id(struct pnp_id *id, struct pnp_card * card)
+int pnp_add_card_id(struct pnp_id *id, struct pnp_card *card)
{
- struct pnp_id * ptr;
+ struct pnp_id *ptr;
+
if (!id)
return -EINVAL;
if (!card)
@@ -115,10 +119,11 @@ int pnp_add_card_id(struct pnp_id *id, struct pnp_card * card)
return 0;
}
-static void pnp_free_card_ids(struct pnp_card * card)
+static void pnp_free_card_ids(struct pnp_card *card)
{
- struct pnp_id * id;
+ struct pnp_id *id;
struct pnp_id *next;
+
if (!card)
return;
id = card->id;
@@ -131,49 +136,55 @@ static void pnp_free_card_ids(struct pnp_card * card)
static void pnp_release_card(struct device *dmdev)
{
- struct pnp_card * card = to_pnp_card(dmdev);
+ struct pnp_card *card = to_pnp_card(dmdev);
+
pnp_free_card_ids(card);
kfree(card);
}
-
-static ssize_t pnp_show_card_name(struct device *dmdev, struct device_attribute *attr, char *buf)
+static ssize_t pnp_show_card_name(struct device *dmdev,
+ struct device_attribute *attr, char *buf)
{
char *str = buf;
struct pnp_card *card = to_pnp_card(dmdev);
- str += sprintf(str,"%s\n", card->name);
+
+ str += sprintf(str, "%s\n", card->name);
return (str - buf);
}
-static DEVICE_ATTR(name,S_IRUGO,pnp_show_card_name,NULL);
+static DEVICE_ATTR(name, S_IRUGO, pnp_show_card_name, NULL);
-static ssize_t pnp_show_card_ids(struct device *dmdev, struct device_attribute *attr, char *buf)
+static ssize_t pnp_show_card_ids(struct device *dmdev,
+ struct device_attribute *attr, char *buf)
{
char *str = buf;
struct pnp_card *card = to_pnp_card(dmdev);
- struct pnp_id * pos = card->id;
+ struct pnp_id *pos = card->id;
while (pos) {
- str += sprintf(str,"%s\n", pos->id);
+ str += sprintf(str, "%s\n", pos->id);
pos = pos->next;
}
return (str - buf);
}
-static DEVICE_ATTR(card_id,S_IRUGO,pnp_show_card_ids,NULL);
+static DEVICE_ATTR(card_id, S_IRUGO, pnp_show_card_ids, NULL);
static int pnp_interface_attach_card(struct pnp_card *card)
{
- int rc = device_create_file(&card->dev,&dev_attr_name);
- if (rc) return rc;
+ int rc = device_create_file(&card->dev, &dev_attr_name);
- rc = device_create_file(&card->dev,&dev_attr_card_id);
- if (rc) goto err_name;
+ if (rc)
+ return rc;
+
+ rc = device_create_file(&card->dev, &dev_attr_card_id);
+ if (rc)
+ goto err_name;
return 0;
err_name:
- device_remove_file(&card->dev,&dev_attr_name);
+ device_remove_file(&card->dev, &dev_attr_name);
return rc;
}
@@ -181,15 +192,16 @@ err_name:
* pnp_add_card - adds a PnP card to the PnP Layer
* @card: pointer to the card to add
*/
-
-int pnp_add_card(struct pnp_card * card)
+int pnp_add_card(struct pnp_card *card)
{
int error;
- struct list_head * pos, * temp;
+ struct list_head *pos, *temp;
+
if (!card || !card->protocol)
return -EINVAL;
- sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number, card->number);
+ sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number,
+ card->number);
card->dev.parent = &card->protocol->dev;
card->dev.bus = NULL;
card->dev.release = &pnp_release_card;
@@ -205,18 +217,21 @@ int pnp_add_card(struct pnp_card * card)
/* we wait until now to add devices in order to ensure the drivers
* will be able to use all of the related devices on the card
* without waiting any unresonable length of time */
- list_for_each(pos,&card->devices){
+ list_for_each(pos, &card->devices) {
struct pnp_dev *dev = card_to_pnp_dev(pos);
__pnp_add_device(dev);
}
/* match with card drivers */
- list_for_each_safe(pos,temp,&pnp_card_drivers){
- struct pnp_card_driver * drv = list_entry(pos, struct pnp_card_driver, global_list);
- card_probe(card,drv);
+ list_for_each_safe(pos, temp, &pnp_card_drivers) {
+ struct pnp_card_driver *drv =
+ list_entry(pos, struct pnp_card_driver,
+ global_list);
+ card_probe(card, drv);
}
} else
- pnp_err("sysfs failure, card '%s' will be unavailable", card->dev.bus_id);
+ pnp_err("sysfs failure, card '%s' will be unavailable",
+ card->dev.bus_id);
return error;
}
@@ -224,10 +239,10 @@ int pnp_add_card(struct pnp_card * card)
* pnp_remove_card - removes a PnP card from the PnP Layer
* @card: pointer to the card to remove
*/
-
-void pnp_remove_card(struct pnp_card * card)
+void pnp_remove_card(struct pnp_card *card)
{
struct list_head *pos, *temp;
+
if (!card)
return;
device_unregister(&card->dev);
@@ -235,7 +250,7 @@ void pnp_remove_card(struct pnp_card * card)
list_del(&card->global_list);
list_del(&card->protocol_list);
spin_unlock(&pnp_lock);
- list_for_each_safe(pos,temp,&card->devices){
+ list_for_each_safe(pos, temp, &card->devices) {
struct pnp_dev *dev = card_to_pnp_dev(pos);
pnp_remove_card_device(dev);
}
@@ -246,15 +261,14 @@ void pnp_remove_card(struct pnp_card * card)
* @card: pointer to the card to add to
* @dev: pointer to the device to add
*/
-
-int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
+int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev)
{
if (!card || !dev || !dev->protocol)
return -EINVAL;
dev->dev.parent = &card->dev;
dev->card_link = NULL;
- snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x", dev->protocol->number,
- card->number,dev->number);
+ snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x",
+ dev->protocol->number, card->number, dev->number);
spin_lock(&pnp_lock);
dev->card = card;
list_add_tail(&dev->card_list, &card->devices);
@@ -266,8 +280,7 @@ int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
* pnp_remove_card_device- removes a device from the specified card
* @dev: pointer to the device to remove
*/
-
-void pnp_remove_card_device(struct pnp_dev * dev)
+void pnp_remove_card_device(struct pnp_dev *dev)
{
spin_lock(&pnp_lock);
dev->card = NULL;
@@ -282,13 +295,14 @@ void pnp_remove_card_device(struct pnp_dev * dev)
* @id: pointer to a PnP ID structure that explains the rules for finding the device
* @from: Starting place to search from. If NULL it will start from the begining.
*/
-
-struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from)
+struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
+ const char *id, struct pnp_dev *from)
{
- struct list_head * pos;
- struct pnp_dev * dev;
- struct pnp_card_driver * drv;
- struct pnp_card * card;
+ struct list_head *pos;
+ struct pnp_dev *dev;
+ struct pnp_card_driver *drv;
+ struct pnp_card *card;
+
if (!clink || !id)
goto done;
card = clink->card;
@@ -302,7 +316,7 @@ struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char
}
while (pos != &card->devices) {
dev = card_to_pnp_dev(pos);
- if ((!dev->card_link) && compare_pnp_id(dev->id,id))
+ if ((!dev->card_link) && compare_pnp_id(dev->id, id))
goto found;
pos = pos->next;
}
@@ -330,10 +344,10 @@ err_out:
* pnp_release_card_device - call this when the driver no longer needs the device
* @dev: pointer to the PnP device stucture
*/
-
-void pnp_release_card_device(struct pnp_dev * dev)
+void pnp_release_card_device(struct pnp_dev *dev)
{
- struct pnp_card_driver * drv = dev->card_link->driver;
+ struct pnp_card_driver *drv = dev->card_link->driver;
+
if (!drv)
return;
drv->link.remove = &card_remove;
@@ -347,6 +361,7 @@ void pnp_release_card_device(struct pnp_dev * dev)
static int card_suspend(struct pnp_dev *dev, pm_message_t state)
{
struct pnp_card_link *link = dev->card_link;
+
if (link->pm_state.event == state.event)
return 0;
link->pm_state = state;
@@ -356,6 +371,7 @@ static int card_suspend(struct pnp_dev *dev, pm_message_t state)
static int card_resume(struct pnp_dev *dev)
{
struct pnp_card_link *link = dev->card_link;
+
if (link->pm_state.event == PM_EVENT_ON)
return 0;
link->pm_state = PMSG_ON;
@@ -367,8 +383,7 @@ static int card_resume(struct pnp_dev *dev)
* pnp_register_card_driver - registers a PnP card driver with the PnP Layer
* @drv: pointer to the driver to register
*/
-
-int pnp_register_card_driver(struct pnp_card_driver * drv)
+int pnp_register_card_driver(struct pnp_card_driver *drv)
{
int error;
struct list_head *pos, *temp;
@@ -389,9 +404,10 @@ int pnp_register_card_driver(struct pnp_card_driver * drv)
list_add_tail(&drv->global_list, &pnp_card_drivers);
spin_unlock(&pnp_lock);
- list_for_each_safe(pos,temp,&pnp_cards){
- struct pnp_card *card = list_entry(pos, struct pnp_card, global_list);
- card_probe(card,drv);
+ list_for_each_safe(pos, temp, &pnp_cards) {
+ struct pnp_card *card =
+ list_entry(pos, struct pnp_card, global_list);
+ card_probe(card, drv);
}
return 0;
}
@@ -400,8 +416,7 @@ int pnp_register_card_driver(struct pnp_card_driver * drv)
* pnp_unregister_card_driver - unregisters a PnP card driver from the PnP Layer
* @drv: pointer to the driver to unregister
*/
-
-void pnp_unregister_card_driver(struct pnp_card_driver * drv)
+void pnp_unregister_card_driver(struct pnp_card_driver *drv)
{
spin_lock(&pnp_lock);
list_del(&drv->global_list);
@@ -409,13 +424,6 @@ void pnp_unregister_card_driver(struct pnp_card_driver * drv)
pnp_unregister_driver(&drv->link);
}
-#if 0
-EXPORT_SYMBOL(pnp_add_card);
-EXPORT_SYMBOL(pnp_remove_card);
-EXPORT_SYMBOL(pnp_add_card_device);
-EXPORT_SYMBOL(pnp_remove_card_device);
-EXPORT_SYMBOL(pnp_add_card_id);
-#endif /* 0 */
EXPORT_SYMBOL(pnp_request_card_device);
EXPORT_SYMBOL(pnp_release_card_device);
EXPORT_SYMBOL(pnp_register_card_driver);