diff options
| author | Johan Hedberg <johan.hedberg@intel.com> | 2013-01-14 20:33:50 (GMT) |
|---|---|---|
| committer | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2013-01-18 04:54:21 (GMT) |
| commit | 6ead1bbc381a674c20f227dbe6f3a8c6f67ce7a2 (patch) | |
| tree | d7b1a11d2a20c8d36bb9ce39467cecbc7735a640 /net/bluetooth | |
| parent | 52e0b011e29f36bc5c02ea3adbf4d864a38373de (diff) | |
| download | linux-6ead1bbc381a674c20f227dbe6f3a8c6f67ce7a2.tar.xz | |
Bluetooth: Add a new workqueue for hci_request operations
The hci_request function is blocking and cannot be called through the
usual per-HCI device workqueue (hdev->workqueue). While hci_request is
in progress any other work from the queue, including sending HCI
commands to the controller would be blocked and eventually cause the
hci_request call to time out.
This patch adds a second workqueue to be used by operations needing
hci_request and thereby avoiding issues with blocking other workqueue
users.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/hci_core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 596660d..f73907a 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1799,6 +1799,15 @@ int hci_register_dev(struct hci_dev *hdev) goto err; } + hdev->req_workqueue = alloc_workqueue(hdev->name, + WQ_HIGHPRI | WQ_UNBOUND | + WQ_MEM_RECLAIM, 1); + if (!hdev->req_workqueue) { + destroy_workqueue(hdev->workqueue); + error = -ENOMEM; + goto err; + } + error = hci_add_sysfs(hdev); if (error < 0) goto err_wqueue; @@ -1827,6 +1836,7 @@ int hci_register_dev(struct hci_dev *hdev) err_wqueue: destroy_workqueue(hdev->workqueue); + destroy_workqueue(hdev->req_workqueue); err: ida_simple_remove(&hci_index_ida, hdev->id); write_lock(&hci_dev_list_lock); @@ -1880,6 +1890,7 @@ void hci_unregister_dev(struct hci_dev *hdev) hci_del_sysfs(hdev); destroy_workqueue(hdev->workqueue); + destroy_workqueue(hdev->req_workqueue); hci_dev_lock(hdev); hci_blacklist_clear(hdev); |