[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: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 25 insertions, 25 deletions

diff --git a/drivers/media/dvb/frontends/lgdt330x.c b/drivers/media/dvb/frontends/lgdt330x.c
index 1f1cd7a8d500..7142b9c51dd2 100644
--- a/drivers/media/dvb/frontends/lgdt330x.c
+++ b/drivers/media/dvb/frontends/lgdt330x.c
@@ -69,8 +69,8 @@ struct lgdt330x_state
 };
 
 static int i2c_write_demod_bytes (struct lgdt330x_state* state,
-                           u8 *buf, /* data bytes to send */
-                           int len  /* number of bytes to send */ )
+                                  u8 *buf, /* data bytes to send */
+                                  int len  /* number of bytes to send */ )
 {
         struct i2c_msg msg =
                 { .addr = state->config->demod_address,
@@ -129,13 +129,13 @@ static int lgdt3302_SwReset(struct lgdt330x_state* state)
         };
 
         ret = i2c_write_demod_bytes(state,
-                             reset, sizeof(reset));
+                                    reset, sizeof(reset));
         if (ret == 0) {
 
                 /* force reset high (inactive) and unmask interrupts */
                 reset[1] = 0x7f;
                 ret = i2c_write_demod_bytes(state,
-                                     reset, sizeof(reset));
+                                            reset, sizeof(reset));
         }
         return ret;
 }
@@ -149,13 +149,13 @@ static int lgdt3303_SwReset(struct lgdt330x_state* state)
         };
 
         ret = i2c_write_demod_bytes(state,
-                             reset, sizeof(reset));
+                                    reset, sizeof(reset));
         if (ret == 0) {
 
                 /* force reset high (inactive) */
                 reset[1] = 0x01;
                 ret = i2c_write_demod_bytes(state,
-                                     reset, sizeof(reset));
+                                            reset, sizeof(reset));
         }
         return ret;
 }
@@ -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.
@@ -229,13 +228,13 @@ static int lgdt330x_init(struct dvb_frontend* fe)
         case LGDT3302:
                 chip_name = "LGDT3302";
                 err = i2c_write_demod_bytes(state, lgdt3302_init_data,
-                                                                        sizeof(lgdt3302_init_data));
-                break;
+                                            sizeof(lgdt3302_init_data));
+                break;
         case LGDT3303:
                 chip_name = "LGDT3303";
                 err = i2c_write_demod_bytes(state, lgdt3303_init_data,
-                                                                        sizeof(lgdt3303_init_data));
-                break;
+                                            sizeof(lgdt3303_init_data));
+                break;
         default:
                 chip_name = "undefined";
                 printk (KERN_WARNING "Only LGDT3302 and LGDT3303 are supported chips.\n");
@@ -262,15 +261,15 @@ static int lgdt330x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
         switch (state->config->demod_chip) {
         case LGDT3302:
                 err = i2c_read_demod_bytes(state, LGDT3302_PACKET_ERR_COUNTER1,
-                                                                  buf, sizeof(buf));
-                break;
+                                           buf, sizeof(buf));
+                break;
         case LGDT3303:
                 err = i2c_read_demod_bytes(state, LGDT3303_PACKET_ERR_COUNTER1,
-                                                                  buf, sizeof(buf));
-                break;
+                                           buf, sizeof(buf));
+                break;
         default:
                 printk(KERN_WARNING
-                           "Only LGDT3302 and LGDT3303 are supported chips.\n");
+                       "Only LGDT3302 and LGDT3303 are supported chips.\n");
                 err = -ENODEV;
         }
 
@@ -330,7 +329,7 @@ static int lgdt330x_set_parameters(struct dvb_frontend* fe,
 
                         if (state->config->demod_chip == LGDT3303) {
                                 err = i2c_write_demod_bytes(state, lgdt3303_8vsb_44_data,
-                                                                                        sizeof(lgdt3303_8vsb_44_data));
+                                                            sizeof(lgdt3303_8vsb_44_data));
                         }
                         break;
 
@@ -378,18 +377,19 @@ 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));
-                state->config->set_ts_params(fe, 0);
+                                      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;
-        }
+
+        /* Keep track of the new frequency */
+        state->current_frequency = param->frequency;
+
         lgdt330x_SwReset(state);
         return 0;
 }