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NFC: pn533: Optimise issued cmd context tracking

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Use struct pn533_cmd instead of pn533_send_async_complete_arg
to track the context of the issued cmd.

This way pn533_send_async_complete_arg struct is no needed
anymore. Just move issuer complete callback to pn533_cmd struct.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Waldemar Rymarkiewicz 2013-04-03 08:02:04 +02:00 committed by Samuel Ortiz
parent 0ce1fbdd60
commit 4231604b3e
1 changed files with 35 additions and 52 deletions
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87
drivers/nfc/pn533.c
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@ -363,7 +363,8 @@ struct pn533_cmd {
struct sk_buff *req;
struct sk_buff *resp;
int resp_len;
void *arg;
pn533_send_async_complete_t complete_cb;
void *complete_cb_context;
};
struct pn533_std_frame {
@ -691,39 +692,32 @@ static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code,
ops->tx_frame_finish(skb->data);
}
struct pn533_send_async_complete_arg {
pn533_send_async_complete_t complete_cb;
void *complete_cb_context;
struct sk_buff *resp;
struct sk_buff *req;
};
static int pn533_send_async_complete(struct pn533 *dev, void *_arg, int status)
static int pn533_send_async_complete(struct pn533 *dev, void *arg, int status)
{
struct pn533_send_async_complete_arg *arg = _arg;
struct pn533_cmd *cmd = arg;
struct sk_buff *req = arg->req;
struct sk_buff *resp = arg->resp;
struct sk_buff *req = cmd->req;
struct sk_buff *resp = cmd->resp;
int rc;
dev_kfree_skb(req);
if (status < 0) {
arg->complete_cb(dev, arg->complete_cb_context,
ERR_PTR(status));
rc = cmd->complete_cb(dev, cmd->complete_cb_context,
ERR_PTR(status));
dev_kfree_skb(resp);
kfree(arg);
return status;
kfree(cmd);
return rc;
}
skb_put(resp, dev->ops->rx_frame_size(resp->data));
skb_pull(resp, dev->ops->rx_header_len);
skb_trim(resp, resp->len - dev->ops->rx_tail_len);
rc = arg->complete_cb(dev, arg->complete_cb_context, resp);
rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp);
kfree(arg);
kfree(cmd);
return rc;
}
@ -734,19 +728,20 @@ static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
void *complete_cb_context)
{
struct pn533_cmd *cmd;
struct pn533_send_async_complete_arg *arg;
int rc = 0;
nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code);
arg = kzalloc(sizeof(*arg), GFP_KERNEL);
if (!arg)
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
arg->complete_cb = complete_cb;
arg->complete_cb_context = complete_cb_context;
arg->resp = resp;
arg->req = req;
cmd->cmd_code = cmd_code;
cmd->req = req;
cmd->resp = resp;
cmd->resp_len = resp_len;
cmd->complete_cb = complete_cb;
cmd->complete_cb_context = complete_cb_context;
pn533_build_cmd_frame(dev, cmd_code, req);
@ -754,7 +749,7 @@ static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
if (!dev->cmd_pending) {
rc = __pn533_send_frame_async(dev, req, resp, resp_len,
pn533_send_async_complete, arg);
pn533_send_async_complete, cmd);
if (rc)
goto error;
@ -765,25 +760,13 @@ static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__,
cmd_code);
cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL);
if (!cmd) {
rc = -ENOMEM;
goto error;
}
INIT_LIST_HEAD(&cmd->queue);
cmd->cmd_code = cmd_code;
cmd->req = req;
cmd->resp = resp;
cmd->resp_len = resp_len;
cmd->arg = arg;
list_add_tail(&cmd->queue, &dev->cmd_queue);
goto unlock;
error:
kfree(arg);
kfree(cmd);
unlock:
mutex_unlock(&dev->cmd_lock);
return rc;
@ -848,8 +831,8 @@ static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
pn533_send_async_complete_t complete_cb,
void *complete_cb_context)
{
struct pn533_send_async_complete_arg *arg;
struct sk_buff *resp;
struct pn533_cmd *cmd;
int rc;
int resp_len = dev->ops->rx_header_len +
dev->ops->max_payload_len +
@ -859,24 +842,26 @@ static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
if (!resp)
return -ENOMEM;
arg = kzalloc(sizeof(*arg), GFP_KERNEL);
if (!arg) {
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
dev_kfree_skb(resp);
return -ENOMEM;
}
arg->complete_cb = complete_cb;
arg->complete_cb_context = complete_cb_context;
arg->resp = resp;
arg->req = req;
cmd->cmd_code = cmd_code;
cmd->req = req;
cmd->resp = resp;
cmd->resp_len = resp_len;
cmd->complete_cb = complete_cb;
cmd->complete_cb_context = complete_cb_context;
pn533_build_cmd_frame(dev, cmd_code, req);
rc = __pn533_send_frame_async(dev, req, resp, resp_len,
pn533_send_async_complete, arg);
pn533_send_async_complete, cmd);
if (rc < 0) {
dev_kfree_skb(resp);
kfree(arg);
kfree(cmd);
}
return rc;
@ -903,14 +888,12 @@ static void pn533_wq_cmd(struct work_struct *work)
mutex_unlock(&dev->cmd_lock);
rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len,
pn533_send_async_complete, cmd->arg);
pn533_send_async_complete, cmd);
if (rc < 0) {
dev_kfree_skb(cmd->req);
dev_kfree_skb(cmd->resp);
kfree(cmd->arg);
kfree(cmd);
}
kfree(cmd);
}
struct pn533_sync_cmd_response {