[media] mb86a20s: better name temp vars at mb86a20s_layer_bitrate()

Using 'i' for the guard interval temporary var is a bad idea, as
'i' is generally used by "anonymous" indexes.
Let's rename modulation, fec and guard interval temp vars with
a meaningful name, as that makes easier to understand the code
and avoids cut-and-paste types of error.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index d25df75ed404b28100fe22a1e34728e60d4f9f18..856374bd3676e2a3c3bfc9deab4d6ec23684c1f8 100644 (file)
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -566,12 +566,13 @@ static u32 isdbt_rate[3][5][4] = {
 };
 
 static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer,
-                                  u32 modulation, u32 fec, u32 interleaving,
+                                  u32 modulation, u32 forward_error_correction,
+                                  u32 interleaving,
                                   u32 segment)
 {
        struct mb86a20s_state *state = fe->demodulator_priv;
        u32 rate;
-       int m, f, i;
+       int mod, fec, guard;
 
        /*
         * If modulation/fec/interleaving is not detected, the default is
@@ -582,54 +583,54 @@ static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer,
        case DQPSK:
        case QPSK:
        default:
-               m = 0;
+               mod = 0;
                break;
        case QAM_16:
-               m = 1;
+               mod = 1;
                break;
        case QAM_64:
-               m = 2;
+               mod = 2;
                break;
        }
 
-       switch (fec) {
+       switch (forward_error_correction) {
        default:
        case FEC_1_2:
        case FEC_AUTO:
-               f = 0;
+               fec = 0;
                break;
        case FEC_2_3:
-               f = 1;
+               fec = 1;
                break;
        case FEC_3_4:
-               f = 2;
+               fec = 2;
                break;
        case FEC_5_6:
-               f = 3;
+               fec = 3;
                break;
        case FEC_7_8:
-               f = 4;
+               fec = 4;
                break;
        }
 
        switch (interleaving) {
        default:
        case GUARD_INTERVAL_1_4:
-               i = 0;
+               guard = 0;
                break;
        case GUARD_INTERVAL_1_8:
-               i = 1;
+               guard = 1;
                break;
        case GUARD_INTERVAL_1_16:
-               i = 2;
+               guard = 2;
                break;
        case GUARD_INTERVAL_1_32:
-               i = 3;
+               guard = 3;
                break;
        }
 
        /* Samples BER at BER_SAMPLING_RATE seconds */
-       rate = isdbt_rate[m][f][i] * segment * BER_SAMPLING_RATE;
+       rate = isdbt_rate[mod][fec][guard] * segment * BER_SAMPLING_RATE;
 
        /* Avoids sampling too quickly or to overflow the register */
        if (rate < 256)
@@ -639,13 +640,13 @@ static void mb86a20s_layer_bitrate(struct dvb_frontend *fe, u32 layer,
 
        dev_dbg(&state->i2c->dev,
                "%s: layer %c bitrate: %d kbps; counter = %d (0x%06x)\n",
-              __func__, 'A' + layer, segment * isdbt_rate[m][f][i]/1000,
+               __func__, 'A' + layer,
+               segment * isdbt_rate[mod][fec][guard]/1000,
                rate, rate);
 
        state->estimated_rate[layer] = rate;
 }
 
-
 static int mb86a20s_get_frontend(struct dvb_frontend *fe)
 {
        struct mb86a20s_state *state = fe->demodulator_priv;