[media] lmedm04: Fix possible NULL pointer dereference

Check for (adap == NULL) has to done before accessing adap.

Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c b/drivers/media/usb/dvb-usb-v2/lmedm04.c
index f30c58cecbba..96804be0fffe 100644
--- a/drivers/media/usb/dvb-usb-v2/lmedm04.c
+++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c
@@ -1241,10 +1241,13 @@ static int lme2510_get_stream_config(struct dvb_frontend *fe, u8 *ts_type,
                 struct usb_data_stream_properties *stream)
 {
         struct dvb_usb_adapter *adap = fe_to_adap(fe);
-        struct dvb_usb_device *d = adap_to_d(adap);
+        struct dvb_usb_device *d;
 
         if (adap == NULL)
                 return 0;
+
+        d = adap_to_d(adap);
+
         /* Turn PID filter on the fly by module option */
         if (pid_filter == 2) {
                 adap->pid_filtering  = 1;