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firewire: Iterate through units in a keventd callback for update callbacks.

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We can't take the klist lock for the child device list in interrupt
context.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Kristian Høgsberg 2007-03-07 12:12:39 -05:00 committed by Stefan Richter
parent e254a4b45f
commit 5f48047756
1 changed files with 14 additions and 3 deletions
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15
drivers/firewire/fw-device.c
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@ -530,6 +530,14 @@ static int update_unit(struct device *dev, void *data)
return 0;
}
static void fw_device_update(struct work_struct *work)
{
struct fw_device *device =
container_of(work, struct fw_device, work.work);
device_for_each_child(&device->device, NULL, update_unit);
}
void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
{
struct fw_device *device;
@ -577,7 +585,10 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
device = node->data;
device->node_id = node->node_id;
device->generation = card->generation;
device_for_each_child(&device->device, NULL, update_unit);
if (atomic_read(&device->state) == FW_DEVICE_RUNNING) {
PREPARE_DELAYED_WORK(&device->work, fw_device_update);
schedule_delayed_work(&device->work, 0);
}
break;
case FW_NODE_DESTROYED:
@ -598,7 +609,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
device = node->data;
if (atomic_xchg(&device->state,
FW_DEVICE_SHUTDOWN) == FW_DEVICE_RUNNING) {
INIT_DELAYED_WORK(&device->work, fw_device_shutdown);
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
schedule_delayed_work(&device->work, 0);
}
break;