[PATCH] dvb: nxt200x: check callback fix

Check that a callback (set_ts_params) is set before calling it.

Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/media/dvb/frontends/nxt200x.c b/drivers/media/dvb/frontends/nxt200x.c
index 1d729be9b75c..d1b9f8b9b437 100644
--- a/drivers/media/dvb/frontends/nxt200x.c
+++ b/drivers/media/dvb/frontends/nxt200x.c
@@ -557,14 +557,16 @@ static int nxt200x_setup_frontend_parameters (struct dvb_frontend* fe,
                 case QAM_256:
                         /* Set punctured clock for QAM */
                         /* This is just a guess since I am unable to test it */
-                        state->config->set_ts_params(fe, 1);
+                        if (state->config->set_ts_params)
+                                state->config->set_ts_params(fe, 1);
 
                         /* set to use cable input */
                         buf[3] |= 0x08;
                         break;
                 case VSB_8:
                         /* Set non-punctured clock for VSB */
-                        state->config->set_ts_params(fe, 0);
+                        if (state->config->set_ts_params)
+                                state->config->set_ts_params(fe, 0);
                         break;
                 default:
                         return -EINVAL;