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authorStefan Richter <stefanr@s5r6.in-berlin.de>2009-01-04 16:23:29 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2009-03-24 20:56:45 +0100
commit3ba949868a6dc082b24cba5c3bf3f50de7391433 (patch)
tree67111ee78f57bae142182a43b5193802c1183d22 /drivers/firewire
parent5d3fd692a7196a9045fb606f891f5987959b65a0 (diff)
downloadop-kernel-dev-3ba949868a6dc082b24cba5c3bf3f50de7391433.zip
op-kernel-dev-3ba949868a6dc082b24cba5c3bf3f50de7391433.tar.gz
firewire: cdev: replace some spin_lock_irqsave by spin_lock_irq
All of these functions are entered with IRQs enabled. Hence the unconditional spin_unlock_irq can be used. Function: Caller context: dequeue_event() client process, via read(2) fill_bus_reset_event() fw-device.c update worqueue job release_client_resource() client process, via ioctl(2) fw_device_op_release() client process, via close(2) Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire')
-rw-r--r--drivers/firewire/fw-cdev.c20
1 files changed, 8 insertions, 12 deletions
diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c
index 6b33f15..3d816a6 100644
--- a/drivers/firewire/fw-cdev.c
+++ b/drivers/firewire/fw-cdev.c
@@ -237,7 +237,6 @@ static void queue_event(struct client *client, struct event *event,
static int dequeue_event(struct client *client,
char __user *buffer, size_t count)
{
- unsigned long flags;
struct event *event;
size_t size, total;
int i, ret;
@@ -252,10 +251,10 @@ static int dequeue_event(struct client *client,
fw_device_is_shutdown(client->device))
return -ENODEV;
- spin_lock_irqsave(&client->lock, flags);
+ spin_lock_irq(&client->lock);
event = list_first_entry(&client->event_list, struct event, link);
list_del(&event->link);
- spin_unlock_irqrestore(&client->lock, flags);
+ spin_unlock_irq(&client->lock);
total = 0;
for (i = 0; i < ARRAY_SIZE(event->v) && total < count; i++) {
@@ -286,9 +285,8 @@ static void fill_bus_reset_event(struct fw_cdev_event_bus_reset *event,
struct client *client)
{
struct fw_card *card = client->device->card;
- unsigned long flags;
- spin_lock_irqsave(&card->lock, flags);
+ spin_lock_irq(&card->lock);
event->closure = client->bus_reset_closure;
event->type = FW_CDEV_EVENT_BUS_RESET;
@@ -299,7 +297,7 @@ static void fill_bus_reset_event(struct fw_cdev_event_bus_reset *event,
event->irm_node_id = card->irm_node->node_id;
event->root_node_id = card->root_node->node_id;
- spin_unlock_irqrestore(&card->lock, flags);
+ spin_unlock_irq(&card->lock);
}
static void for_each_client(struct fw_device *device,
@@ -432,16 +430,15 @@ static int release_client_resource(struct client *client, u32 handle,
struct client_resource **resource)
{
struct client_resource *r;
- unsigned long flags;
- spin_lock_irqsave(&client->lock, flags);
+ spin_lock_irq(&client->lock);
if (client->in_shutdown)
r = NULL;
else
r = idr_find(&client->resource_idr, handle);
if (r && r->release == release)
idr_remove(&client->resource_idr, handle);
- spin_unlock_irqrestore(&client->lock, flags);
+ spin_unlock_irq(&client->lock);
if (!(r && r->release == release))
return -EINVAL;
@@ -1384,7 +1381,6 @@ static int fw_device_op_release(struct inode *inode, struct file *file)
{
struct client *client = file->private_data;
struct event *e, *next_e;
- unsigned long flags;
mutex_lock(&client->device->client_list_mutex);
list_del(&client->link);
@@ -1397,9 +1393,9 @@ static int fw_device_op_release(struct inode *inode, struct file *file)
fw_iso_context_destroy(client->iso_context);
/* Freeze client->resource_idr and client->event_list */
- spin_lock_irqsave(&client->lock, flags);
+ spin_lock_irq(&client->lock);
client->in_shutdown = true;
- spin_unlock_irqrestore(&client->lock, flags);
+ spin_unlock_irq(&client->lock);
idr_for_each(&client->resource_idr, shutdown_resource, client);
idr_remove_all(&client->resource_idr);
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