[PATCH 31/37] dvb: nxt200x: check callback fix

[Michael Krufky <mkrufky@m1k.net>]

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

Signed-off-by: Michael Krufky <mkrufky@m1k.net>

 drivers/media/dvb/frontends/nxt200x.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- linux-2.6.14-git3.orig/drivers/media/dvb/frontends/nxt200x.c
+++ linux-2.6.14-git3/drivers/media/dvb/frontends/nxt200x.c
@@ -557,14 +557,16 @@
 		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;