From 6c1c5b9e1d8a25268a607c762576b5c16e3e7230 Mon Sep 17 00:00:00 2001
From: Eric Lapuyade <eric.lapuyade@intel.com>
Date: Thu, 3 May 2012 15:35:25 +0200
Subject: [PATCH] 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>
---
net/nfc/hci/command.c | 18 +++---------------
net/nfc/hci/core.c | 20 ++++++++++++++++----
net/nfc/hci/hci.h | 7 ++++---
3 files changed, 23 insertions(+), 22 deletions(-)
diff --git a/net/nfc/hci/command.c b/net/nfc/hci/command.c
index 8729abf5f18b3..12cd6f3f77ec8 100644
--- a/net/nfc/hci/command.c
+++ b/net/nfc/hci/command.c
@@ -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
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index 7d4fdbc06a98d..5be7405ce6aae 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -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);
diff --git a/net/nfc/hci/hci.h b/net/nfc/hci/hci.h
index 45f2fe4fd4867..d3cde075ba608 100644
--- a/net/nfc/hci/hci.h
+++ b/net/nfc/hci/hci.h
@@ -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 {
--
2.30.2