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OpenCloudOS-Kernel
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firewire: remove superfluous reference counting 

The card->kref became obsolete since patch "firewire: fix crash in
automatic module unloading" added another counter of card users.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jarod Wilson <jwilson@redhat.com>
This commit is contained in:
Stefan Richter 2008-02-24 18:59:55 +01:00
parent a6ca4f7081
commit bd7dee6311
3 changed files with 4 additions and 46 deletions
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38
drivers/firewire/fw-card.c
View File

@ -398,7 +398,6 @@ fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
{
static atomic_t index = ATOMIC_INIT(-1);
kref_init(&card->kref);
atomic_set(&card->device_count, 0);
card->index = atomic_inc_return(&index);
card->driver = driver;
@ -429,12 +428,6 @@ fw_card_add(struct fw_card *card,
card->link_speed = link_speed;
card->guid = guid;
/*
* The subsystem grabs a reference when the card is added and
* drops it when the driver calls fw_core_remove_card.
*/
fw_card_get(card);
mutex_lock(&card_mutex);
config_rom = generate_config_rom(card, &length);
list_add_tail(&card->link, &card_list);
@ -540,40 +533,9 @@ fw_core_remove_card(struct fw_card *card)
cancel_delayed_work_sync(&card->work);
fw_flush_transactions(card);
del_timer_sync(&card->flush_timer);
fw_card_put(card);
}
EXPORT_SYMBOL(fw_core_remove_card);
struct fw_card *
fw_card_get(struct fw_card *card)
{
kref_get(&card->kref);
return card;
}
EXPORT_SYMBOL(fw_card_get);
static void
release_card(struct kref *kref)
{
struct fw_card *card = container_of(kref, struct fw_card, kref);
kfree(card);
}
/*
* An assumption for fw_card_put() is that the card driver allocates
* the fw_card struct with kalloc and that it has been shut down
* before the last ref is dropped.
*/
void
fw_card_put(struct fw_card *card)
{
kref_put(&card->kref, release_card);
}
EXPORT_SYMBOL(fw_card_put);
int
fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
{

8
drivers/firewire/fw-ohci.c
View File

@ -2077,7 +2077,7 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
err = pci_enable_device(dev);
if (err) {
fw_error("Failed to enable OHCI hardware.\n");
goto fail_put_card;
goto fail_free;
}
pci_set_master(dev);
@ -2173,8 +2173,8 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
pci_release_region(dev, 0);
fail_disable:
pci_disable_device(dev);
fail_put_card:
fw_card_put(&ohci->card);
fail_free:
kfree(&ohci->card);
return err;
}
@ -2202,7 +2202,7 @@ static void pci_remove(struct pci_dev *dev)
pci_iounmap(dev, ohci->registers);
pci_release_region(dev, 0);
pci_disable_device(dev);
fw_card_put(&ohci->card);
kfree(&ohci->card);
#ifdef CONFIG_PPC_PMAC
/* On UniNorth, power down the cable and turn off the chip clock

4
drivers/firewire/fw-transaction.h
View File

@ -221,7 +221,6 @@ struct fw_card {
const struct fw_card_driver *driver;
struct device *device;
atomic_t device_count;
struct kref kref;
int node_id;
int generation;
@ -263,9 +262,6 @@ struct fw_card {
int bm_generation;
};
struct fw_card *fw_card_get(struct fw_card *card);
void fw_card_put(struct fw_card *card);
/*
* The iso packet format allows for an immediate header/payload part
* stored in 'header' immediately after the packet info plus an