diff options
author | Yeasah Pell <yeasah@schwide.com> | 2006-08-08 12:10:18 (GMT) |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-08-08 18:53:04 (GMT) |
commit | 0851fb48486c044476b019029245cb9b348fca33 (patch) | |
tree | 4a664e168f9d809963a52f507e0b5c4f6803e881 /drivers/media | |
parent | eafa98177a388700d613c187c7716e11869b7171 (diff) | |
download | linux-fsl-qoriq-0851fb48486c044476b019029245cb9b348fca33.tar.xz |
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>
Diffstat (limited to 'drivers/media')
-rw-r--r-- | drivers/media/dvb/bt8xx/dst.c | 58 |
1 files changed, 27 insertions, 31 deletions
diff --git a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c index d687a14..06ac899 100644 --- a/drivers/media/dvb/bt8xx/dst.c +++ b/drivers/media/dvb/bt8xx/dst.c @@ -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, |