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NFC: Changed HCI cmd execution completion result to std linux errno 

An HCI command can complete either from an HCI response
(with an HCI result) or as a consequence of any other system
error during processing. The completion therefore needs to take
a standard errno code. The HCI response will convert its result
to a standard errno before calling the completion.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Eric Lapuyade 2012-05-03 15:35:25 +02:00 committed by John W. Linville
parent 72b06f75fe
commit 6c1c5b9e1d
3 changed files with 23 additions and 22 deletions
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18
net/nfc/hci/command.c
View File

@ -28,26 +28,14 @@
#include "hci.h"
static int nfc_hci_result_to_errno(u8 result)
{
switch (result) {
case NFC_HCI_ANY_OK:
return 0;
case NFC_HCI_ANY_E_TIMEOUT:
return -ETIMEDOUT;
default:
return -1;
}
}
static void nfc_hci_execute_cb(struct nfc_hci_dev *hdev, u8 result,
static void nfc_hci_execute_cb(struct nfc_hci_dev *hdev, int err,
struct sk_buff *skb, void *cb_data)
{
struct hcp_exec_waiter *hcp_ew = (struct hcp_exec_waiter *)cb_data;
pr_debug("HCI Cmd completed with HCI result=%d\n", result);
pr_debug("HCI Cmd completed with result=%d\n", err);
hcp_ew->exec_result = nfc_hci_result_to_errno(result);
hcp_ew->exec_result = err;
if (hcp_ew->exec_result == 0)
hcp_ew->result_skb = skb;
else

20
net/nfc/hci/core.c
View File

@ -32,6 +32,18 @@
/* Largest headroom needed for outgoing HCI commands */
#define HCI_CMDS_HEADROOM 1
static int nfc_hci_result_to_errno(u8 result)
{
switch (result) {
case NFC_HCI_ANY_OK:
return 0;
case NFC_HCI_ANY_E_TIMEOUT:
return -ETIME;
default:
return -1;
}
}
static void nfc_hci_msg_tx_work(struct work_struct *work)
{
struct nfc_hci_dev *hdev = container_of(work, struct nfc_hci_dev,
@ -46,7 +58,7 @@ static void nfc_hci_msg_tx_work(struct work_struct *work)
if (timer_pending(&hdev->cmd_timer) == 0) {
if (hdev->cmd_pending_msg->cb)
hdev->cmd_pending_msg->cb(hdev,
NFC_HCI_ANY_E_TIMEOUT,
-ETIME,
NULL,
hdev->
cmd_pending_msg->
@ -71,8 +83,7 @@ next_msg:
kfree_skb(skb);
skb_queue_purge(&msg->msg_frags);
if (msg->cb)
msg->cb(hdev, NFC_HCI_ANY_E_NOK, NULL,
msg->cb_context);
msg->cb(hdev, r, NULL, msg->cb_context);
kfree(msg);
break;
}
@ -129,7 +140,8 @@ void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
del_timer_sync(&hdev->cmd_timer);
if (hdev->cmd_pending_msg->cb)
hdev->cmd_pending_msg->cb(hdev, result, skb,
hdev->cmd_pending_msg->cb(hdev, nfc_hci_result_to_errno(result),
skb,
hdev->cmd_pending_msg->cb_context);
else
kfree_skb(skb);

7
net/nfc/hci/hci.h
View File

@ -37,10 +37,11 @@ struct hcp_packet {
/*
* HCI command execution completion callback.
* result will be one of the HCI response codes.
* skb contains the response data and must be disposed.
* result will be a standard linux error (may be converted from HCI response)
* skb contains the response data and must be disposed, or may be NULL if
* an error occured
*/
typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, u8 result,
typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, int result,
struct sk_buff *skb, void *cb_data);
struct hcp_exec_waiter {