[PATCH] DVB: lgdt330x check callback fix

Most of the patch is whitespace cleanup, but more importantly, this patch
checks to see whether a callback is set before calling it.  On cx88 boards
(currently the only boards using lgdt330x in 2.6.13) every callback is set.
However, newer drivers currently in development leave a callback undefined,
and lgdt330x must not call it if it isn't defined.
Signed-off-by: NPatrick Boettcher <pb@linuxtv.org>
Signed-off-by: NMichael Krufky <mkrufky@m1k.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/media/dvb/frontends/lgdt330x.c

@@ -172,7 +172,6 @@ static int lgdt330x_SwReset(struct lgdt330x_state* state)
 	}
 }
 
-
 static int lgdt330x_init(struct dvb_frontend* fe)
 {
 	/* Hardware reset is done using gpio[0] of cx23880x chip.
@@ -379,17 +378,18 @@ static int lgdt330x_set_parameters(struct dvb_frontend* fe,
 		/* Select the requested mode */
 		i2c_write_demod_bytes(state, top_ctrl_cfg,
 				      sizeof(top_ctrl_cfg));
+		if (state->config->set_ts_params)
 			state->config->set_ts_params(fe, 0);
 		state->current_modulation = param->u.vsb.modulation;
 	}
 
-	/* Change only if we are actually changing the channel */
-	if (state->current_frequency != param->frequency) {
-		/* Tune to the new frequency */
+	/* Tune to the specified frequency */
+	if (state->config->pll_set)
 		state->config->pll_set(fe, param);
+
 	/* Keep track of the new frequency */
 	state->current_frequency = param->frequency;
-	}
+
 	lgdt330x_SwReset(state);
 	return 0;
 }