NFC: pn533: Fix memleak while scheduling next cmd

In case of error from __pn533_send_frame_async() while sending
next cmd from the queue (cmd_wq), cmd->req, cmd->resp and
cmd->arg pointers won't be freed.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 24ffbe04108b..48902e58cacb 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -886,6 +886,7 @@ static void pn533_wq_cmd(struct work_struct *work)
 {
         struct pn533 *dev = container_of(work, struct pn533, cmd_work);
         struct pn533_cmd *cmd;
+        int rc;
 
         mutex_lock(&dev->cmd_lock);
 
@@ -901,8 +902,13 @@ static void pn533_wq_cmd(struct work_struct *work)
 
         mutex_unlock(&dev->cmd_lock);
 
-        __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len,
-                                 pn533_send_async_complete, cmd->arg);
+        rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len,
+                                      pn533_send_async_complete, cmd->arg);
+        if (rc < 0) {
+                dev_kfree_skb(cmd->req);
+                dev_kfree_skb(cmd->resp);
+                kfree(cmd->arg);
+        }
 
         kfree(cmd);
 }