Never call dvb_frontend_detach if we failed to attach a frontend. This fixes the following oops: [ 8.172997] DVB: registering new adapter (TT-Budget S2-1600 PCI) [ 8.209018] adapter has MAC addr = 00:d0:5c:cc:a7:29 [ 8.328665] Intel ICH 0000:00:1f.5: PCI INT B -> GSI 17 (level, low) -> IRQ 17 [ 8.328753] Intel ICH 0000:00:1f.5: setting latency timer to 64 [ 8.562047] DVB: Unable to find symbol stv090x_attach() [ 8.562117] BUG: unable to handle kernel NULL pointer dereference at 000000ac [ 8.562239] IP: [<e08b04a3>] dvb_frontend_detach+0x4/0x67 [dvb_core] Ref http://bugs.debian.org/575207 Also clean up if we are unable to register the tuner and LNB drivers Signed-off-by: Bjørn Mork <bjorn@xxxxxxx> Reported-by: Fladischer Michael <FladischerMichael@xxxxxxxx> --- This version should apply to to git://linuxtv.org/v4l-dvb.git master on top of commit 30b8f0787e51a3ab0c447e0e3bf4aadc7caf9ffd. It is otherwise identical to the v2 patch for the upstream and stable kernel repositories. drivers/media/dvb/ttpci/budget.c | 56 ++++++++++++++++++++----------------- 1 files changed, 30 insertions(+), 26 deletions(-) diff --git a/drivers/media/dvb/ttpci/budget.c b/drivers/media/dvb/ttpci/budget.c index fccb6ad..918679e 100644 --- a/drivers/media/dvb/ttpci/budget.c +++ b/drivers/media/dvb/ttpci/budget.c @@ -628,32 +628,36 @@ static void frontend_init(struct budget *budget) &tt1600_stv6110x_config, &budget->i2c_adap); - tt1600_stv090x_config.tuner_init = ctl->tuner_init; - tt1600_stv090x_config.tuner_sleep = ctl->tuner_sleep; - tt1600_stv090x_config.tuner_set_mode = ctl->tuner_set_mode; - tt1600_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency; - tt1600_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency; - tt1600_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth; - tt1600_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth; - tt1600_stv090x_config.tuner_set_bbgain = ctl->tuner_set_bbgain; - tt1600_stv090x_config.tuner_get_bbgain = ctl->tuner_get_bbgain; - tt1600_stv090x_config.tuner_set_refclk = ctl->tuner_set_refclk; - tt1600_stv090x_config.tuner_get_status = ctl->tuner_get_status; - - /* call the init function once to initialize - tuner's clock output divider and demod's - master clock */ - if (budget->dvb_frontend->ops.init) - budget->dvb_frontend->ops.init(budget->dvb_frontend); - - dvb_attach(isl6423_attach, - budget->dvb_frontend, - &budget->i2c_adap, - &tt1600_isl6423_config); - - } else { - dvb_frontend_detach(budget->dvb_frontend); - budget->dvb_frontend = NULL; + if (ctl) { + tt1600_stv090x_config.tuner_init = ctl->tuner_init; + tt1600_stv090x_config.tuner_sleep = ctl->tuner_sleep; + tt1600_stv090x_config.tuner_set_mode = ctl->tuner_set_mode; + tt1600_stv090x_config.tuner_set_frequency = ctl->tuner_set_frequency; + tt1600_stv090x_config.tuner_get_frequency = ctl->tuner_get_frequency; + tt1600_stv090x_config.tuner_set_bandwidth = ctl->tuner_set_bandwidth; + tt1600_stv090x_config.tuner_get_bandwidth = ctl->tuner_get_bandwidth; + tt1600_stv090x_config.tuner_set_bbgain = ctl->tuner_set_bbgain; + tt1600_stv090x_config.tuner_get_bbgain = ctl->tuner_get_bbgain; + tt1600_stv090x_config.tuner_set_refclk = ctl->tuner_set_refclk; + tt1600_stv090x_config.tuner_get_status = ctl->tuner_get_status; + + /* call the init function once to initialize + tuner's clock output divider and demod's + master clock */ + if (budget->dvb_frontend->ops.init) + budget->dvb_frontend->ops.init(budget->dvb_frontend); + + if (dvb_attach(isl6423_attach, + budget->dvb_frontend, + &budget->i2c_adap, + &tt1600_isl6423_config) == NULL) { + printk("%s: No Intersil ISL6423 found!\n", __func__); + goto error_out; + } + } else { + printk("%s: No STV6110(A) Silicon Tuner found!\n", __func__); + goto error_out; + } } } break; -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
