NFC: pn533: Optimise issued cmd context tracking
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>
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 48902e58..2f39209 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -363,7 +363,8 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
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 {