media: lirc: release lock before sleep

There is no reason to hold the lock while we wait for the IR to transmit.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index 1fc1fd665bce..713d42e4b661 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -347,6 +347,10 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
         if (ret < 0)
                 goto out_kfree;
 
+        kfree(txbuf);
+        kfree(raw);
+        mutex_unlock(&dev->lock);
+
         /*
          * The lircd gap calculation expects the write function to
          * wait for the actual IR signal to be transmitted before
@@ -359,7 +363,7 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf,
                 schedule_timeout(usecs_to_jiffies(towait));
         }
 
-        ret = n;
+        return n;
 out_kfree:
         kfree(txbuf);
         kfree(raw);