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V4L/DVB (4431): Add several error checks to dst 

Signed-off-by: Yeasah Pell <yeasah@shwide.com>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
hifive-unleashed-5.1
Yeasah Pell 2006-08-08 09:10:18 -03:00 committed by Mauro Carvalho Chehab
parent eafa98177a
commit 0851fb4848
1 changed files with 27 additions and 31 deletions
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58
drivers/media/dvb/bt8xx/dst.c
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@ -393,7 +393,7 @@ static int dst_set_bandwidth(struct dst_state *state, fe_bandwidth_t bandwidth)
state->bandwidth = bandwidth;
if (state->dst_type != DST_TYPE_IS_TERR)
return 0;
return -EOPNOTSUPP;
switch (bandwidth) {
case BANDWIDTH_6_MHZ:
@ -462,7 +462,7 @@ static int dst_set_symbolrate(struct dst_state *state, u32 srate)
state->symbol_rate = srate;
if (state->dst_type == DST_TYPE_IS_TERR) {
return 0;
return -EOPNOTSUPP;
}
dprintk(verbose, DST_INFO, 1, "set symrate %u", srate);
srate /= 1000;
@ -504,7 +504,7 @@ static int dst_set_symbolrate(struct dst_state *state, u32 srate)
static int dst_set_modulation(struct dst_state *state, fe_modulation_t modulation)
{
if (state->dst_type != DST_TYPE_IS_CABLE)
return 0;
return -EOPNOTSUPP;
state->modulation = modulation;
switch (modulation) {
@ -1234,7 +1234,7 @@ int dst_command(struct dst_state *state, u8 *data, u8 len)
goto error;
}
if (write_dst(state, data, len)) {
dprintk(verbose, DST_INFO, 1, "Tring to recover.. ");
dprintk(verbose, DST_INFO, 1, "Trying to recover.. ");
if ((dst_error_recovery(state)) < 0) {
dprintk(verbose, DST_ERROR, 1, "Recovery Failed.");
goto error;
@ -1328,15 +1328,13 @@ static int dst_tone_power_cmd(struct dst_state *state)
{
u8 paket[8] = { 0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00 };
if (state->dst_type == DST_TYPE_IS_TERR)
return 0;
if (state->dst_type != DST_TYPE_IS_SAT)
return -EOPNOTSUPP;
paket[4] = state->tx_tuna[4];
paket[2] = state->tx_tuna[2];
paket[3] = state->tx_tuna[3];
paket[7] = dst_check_sum (paket, 7);
dst_command(state, paket, 8);
return 0;
return dst_command(state, paket, 8);
}
static int dst_get_tuna(struct dst_state *state)
@ -1465,7 +1463,7 @@ static int dst_set_diseqc(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd
u8 paket[8] = { 0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec };
if (state->dst_type != DST_TYPE_IS_SAT)
return 0;
return -EOPNOTSUPP;
if (cmd->msg_len > 0 && cmd->msg_len < 5)
memcpy(&paket[3], cmd->msg, cmd->msg_len);
else if (cmd->msg_len == 5 && state->dst_hw_cap & DST_TYPE_HAS_DISEQC5)
@ -1473,18 +1471,17 @@ static int dst_set_diseqc(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd
else
return -EINVAL;
paket[7] = dst_check_sum(&paket[0], 7);
dst_command(state, paket, 8);
return 0;
return dst_command(state, paket, 8);
}
static int dst_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
{
int need_cmd;
int need_cmd, retval = 0;
struct dst_state *state = fe->demodulator_priv;
state->voltage = voltage;
if (state->dst_type != DST_TYPE_IS_SAT)
return 0;
return -EOPNOTSUPP;
need_cmd = 0;
@ -1506,9 +1503,9 @@ static int dst_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
}
if (need_cmd)
dst_tone_power_cmd(state);
retval = dst_tone_power_cmd(state);
return 0;
return retval;
}
static int dst_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
@ -1517,7 +1514,7 @@ static int dst_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
state->tone = tone;
if (state->dst_type != DST_TYPE_IS_SAT)
return 0;
return -EOPNOTSUPP;
switch (tone) {
case SEC_TONE_OFF:
@ -1533,9 +1530,7 @@ static int dst_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
default:
return -EINVAL;
}
dst_tone_power_cmd(state);
return 0;
return dst_tone_power_cmd(state);
}
static int dst_send_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t minicmd)
@ -1543,7 +1538,7 @@ static int dst_send_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t minicmd)
struct dst_state *state = fe->demodulator_priv;
if (state->dst_type != DST_TYPE_IS_SAT)
return 0;
return -EOPNOTSUPP;
state->minicmd = minicmd;
switch (minicmd) {
case SEC_MINI_A:
@ -1553,9 +1548,7 @@ static int dst_send_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t minicmd)
state->tx_tuna[3] = 0xff;
break;
}
dst_tone_power_cmd(state);
return 0;
return dst_tone_power_cmd(state);
}
@ -1608,28 +1601,31 @@ static int dst_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct dst_state *state = fe->demodulator_priv;
dst_get_signal(state);
int retval = dst_get_signal(state);
*strength = state->decode_strength;
return 0;
return retval;
}
static int dst_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct dst_state *state = fe->demodulator_priv;
dst_get_signal(state);
int retval = dst_get_signal(state);
*snr = state->decode_snr;
return 0;
return retval;
}
static int dst_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
{
int retval = -EINVAL;
struct dst_state *state = fe->demodulator_priv;
if (p != NULL) {
dst_set_freq(state, p->frequency);
retval = dst_set_freq(state, p->frequency);
if(retval != 0)
return retval;
dprintk(verbose, DST_DEBUG, 1, "Set Frequency=[%d]", p->frequency);
if (state->dst_type == DST_TYPE_IS_SAT) {
@ -1647,10 +1643,10 @@ static int dst_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_paramet
dst_set_symbolrate(state, p->u.qam.symbol_rate);
dst_set_modulation(state, p->u.qam.modulation);
}
dst_write_tuna(fe);
retval = dst_write_tuna(fe);
}
return 0;
return retval;
}
static int dst_tune_frontend(struct dvb_frontend* fe,