From: Daniel Scheller <[email protected]> This change makes sure that demod frontends are always detached whenever a tuner frontend attach failed. Achieve this by moving the detach-on- failure logic at the end of dvb_input_attach(), and adding a goto to this block on every tuner attach failure case, so if an error occurs, there are no stray attached frontends left. As a side effect, this removes some duplicated code.
Signed-off-by: Daniel Scheller <[email protected]> --- drivers/media/pci/ddbridge/ddbridge-core.c | 49 ++++++++++++++---------------- 1 file changed, 22 insertions(+), 27 deletions(-) diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c index 348cc8b3d1f9..11c5cae92408 100644 --- a/drivers/media/pci/ddbridge/ddbridge-core.c +++ b/drivers/media/pci/ddbridge/ddbridge-core.c @@ -1449,48 +1449,43 @@ static int dvb_input_attach(struct ddb_input *input) if (demod_attach_stv0900(input, 0) < 0) return -ENODEV; if (tuner_attach_stv6110(input, 0) < 0) - return -ENODEV; + goto err_tuner; break; case DDB_TUNER_DVBS_ST_AA: if (demod_attach_stv0900(input, 1) < 0) return -ENODEV; if (tuner_attach_stv6110(input, 1) < 0) - return -ENODEV; + goto err_tuner; break; case DDB_TUNER_DVBS_STV0910: if (demod_attach_stv0910(input, 0) < 0) return -ENODEV; if (tuner_attach_stv6111(input, 0) < 0) - return -ENODEV; + goto err_tuner; break; case DDB_TUNER_DVBS_STV0910_PR: if (demod_attach_stv0910(input, 1) < 0) return -ENODEV; if (tuner_attach_stv6111(input, 1) < 0) - return -ENODEV; + goto err_tuner; break; case DDB_TUNER_DVBS_STV0910_P: if (demod_attach_stv0910(input, 0) < 0) return -ENODEV; if (tuner_attach_stv6111(input, 1) < 0) - return -ENODEV; + goto err_tuner; break; case DDB_TUNER_DVBCT_TR: if (demod_attach_drxk(input) < 0) return -ENODEV; if (tuner_attach_tda18271(input) < 0) - return -ENODEV; + goto err_tuner; break; case DDB_TUNER_DVBCT_ST: if (demod_attach_stv0367(input) < 0) return -ENODEV; - if (tuner_attach_tda18212(input, port->type) < 0) { - if (dvb->fe2) - dvb_frontend_detach(dvb->fe2); - if (dvb->fe) - dvb_frontend_detach(dvb->fe); - return -ENODEV; - } + if (tuner_attach_tda18212(input, port->type) < 0) + goto err_tuner; break; case DDB_TUNER_DVBC2T2I_SONY_P: if (input->port->dev->link[input->port->lnr].info->ts_quirks & @@ -1509,13 +1504,8 @@ static int dvb_input_attach(struct ddb_input *input) par = 1; if (demod_attach_cxd28xx(input, par, osc24) < 0) return -ENODEV; - if (tuner_attach_tda18212(input, port->type) < 0) { - if (dvb->fe2) - dvb_frontend_detach(dvb->fe2); - if (dvb->fe) - dvb_frontend_detach(dvb->fe); - return -ENODEV; - } + if (tuner_attach_tda18212(input, port->type) < 0) + goto err_tuner; break; case DDB_TUNER_DVBC2T2I_SONY: osc24 = 1; @@ -1525,13 +1515,8 @@ static int dvb_input_attach(struct ddb_input *input) case DDB_TUNER_ISDBT_SONY: if (demod_attach_cxd28xx(input, 0, osc24) < 0) return -ENODEV; - if (tuner_attach_tda18212(input, port->type) < 0) { - if (dvb->fe2) - dvb_frontend_detach(dvb->fe2); - if (dvb->fe) - dvb_frontend_detach(dvb->fe); - return -ENODEV; - } + if (tuner_attach_tda18212(input, port->type) < 0) + goto err_tuner; break; default: return 0; @@ -1554,6 +1539,16 @@ static int dvb_input_attach(struct ddb_input *input) dvb->attached = 0x31; return 0; + +err_tuner: + dev_warn(port->dev->dev, "tuner attach failed!\n"); + + if (dvb->fe2) + dvb_frontend_detach(dvb->fe2); + if (dvb->fe) + dvb_frontend_detach(dvb->fe); + + return -ENODEV; } static int port_has_encti(struct ddb_port *port) -- 2.13.6
