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Bluetooth: Add HCI status return parameter to hci_req_sync()

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In some cases it may be important to get the exact HCI status rather
than the converted HCI-to-errno value. Add an optional return
parameter to the hci_req_sync() API to allow for this. Since there are
no good HCI translation candidates for cancelation and timeout, use
the "unknown" status code for those cases.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-11-11 08:11:19 +02:00 • committed by Marcel Holtmann
parent 51d7a94d56
commit 4ebeee2dff
4 changed files with 26 additions and 19 deletions
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12
net/bluetooth/hci_request.c
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@ -186,7 +186,7 @@ EXPORT_SYMBOL(__hci_cmd_sync);
/* Execute request and wait for completion. */
int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
unsigned long opt),
unsigned long opt, __u32 timeout)
unsigned long opt, u32 timeout, u8 *hci_status)
{
struct hci_request req;
DECLARE_WAITQUEUE(wait, current);
@ -231,14 +231,20 @@ int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
switch (hdev->req_status) {
case HCI_REQ_DONE:
err = -bt_to_errno(hdev->req_result);
if (hci_status)
*hci_status = hdev->req_result;
break;
case HCI_REQ_CANCELED:
err = -hdev->req_result;
if (hci_status)
*hci_status = HCI_ERROR_UNSPECIFIED;
break;
default:
err = -ETIMEDOUT;
if (hci_status)
*hci_status = HCI_ERROR_UNSPECIFIED;
break;
}
@ -251,7 +257,7 @@ int __hci_req_sync(struct hci_dev *hdev, void (*func)(struct hci_request *req,
int hci_req_sync(struct hci_dev *hdev, void (*req)(struct hci_request *req,
unsigned long opt),
unsigned long opt, __u32 timeout)
unsigned long opt, u32 timeout, u8 *hci_status)
{
int ret;
@ -260,7 +266,7 @@ int hci_req_sync(struct hci_dev *hdev, void (*req)(struct hci_request *req,
/* Serialize all requests */
hci_req_sync_lock(hdev);
ret = __hci_req_sync(hdev, req, opt, timeout);
ret = __hci_req_sync(hdev, req, opt, timeout, hci_status);
hci_req_sync_unlock(hdev);
return ret;