V4L/DVB: IR: ir-raw-event: null pointer dereference

The original code dereferenced ir->raw after freeing it and setting it
to NULL.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c
index 43094e7eccfa92ba6213115ecdab06d88b1387ec..8e0e1b1f8c87ef9f83f05ab6a564e30ddd78aa4c 100644 (file)
--- a/drivers/media/IR/ir-raw-event.c
+++ b/drivers/media/IR/ir-raw-event.c
@@ -279,9 +279,11 @@ int ir_raw_event_register(struct input_dev *input_dev)
                        "rc%u",  (unsigned int)ir->devno);
 
        if (IS_ERR(ir->raw->thread)) {
+               int ret = PTR_ERR(ir->raw->thread);
+
                kfree(ir->raw);
                ir->raw = NULL;
-               return PTR_ERR(ir->raw->thread);
+               return ret;
        }
 
        mutex_lock(&ir_raw_handler_lock);