media: ddbridge: completely tear down input resources on failure

In dvb_input_attach(), whenever a demod driver fails to initialise, or if
frontend registration fails, perform a full input/frontend teardown using
dvb_input_detach() (which can safely be done since the current init state
is tracked in the 'attached' struct member). Claimed resources thus are
freed which aren't needed when an input or a port is not functional.

While at it, in ddb_ports_detach(), detach the secondary input first. Also
increase the kernlog severity of TDA18212 errors and tuner failures in
general.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c
index a81125d..c2013d1 100644 (file)
--- a/drivers/media/pci/ddbridge/ddbridge-core.c
+++ b/drivers/media/pci/ddbridge/ddbridge-core.c
@@ -1032,7 +1032,7 @@ static int tuner_attach_tda18212(struct ddb_input *input, u32 porttype)
 
        return 0;
 err:
-       dev_notice(dev, "TDA18212 tuner not found. Device is not fully operational.\n");
+       dev_err(dev, "TDA18212 tuner not found. Device is not fully operational.\n");
        return -ENODEV;
 }
 
@@ -1425,7 +1425,7 @@ static int dvb_input_attach(struct ddb_input *input)
        dvb->dmxdev.demux = &dvbdemux->dmx;
        ret = dvb_dmxdev_init(&dvb->dmxdev, adap);
        if (ret < 0)
-               return ret;
+               goto err_detach;
        dvb->attached = 0x11;
 
        dvb->mem_frontend.source = DMX_MEMORY_FE;
@@ -1434,12 +1434,12 @@ static int dvb_input_attach(struct ddb_input *input)
        dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->hw_frontend);
        ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &dvb->hw_frontend);
        if (ret < 0)
-               return ret;
+               goto err_detach;
        dvb->attached = 0x12;
 
        ret = dvb_net_init(adap, &dvb->dvbnet, dvb->dmxdev.demux);
        if (ret < 0)
-               return ret;
+               goto err_detach;
        dvb->attached = 0x20;
 
        dvb->fe = NULL;
@@ -1447,47 +1447,47 @@ static int dvb_input_attach(struct ddb_input *input)
        switch (port->type) {
        case DDB_TUNER_MXL5XX:
                if (ddb_fe_attach_mxl5xx(input) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                break;
        case DDB_TUNER_DVBS_ST:
                if (demod_attach_stv0900(input, 0) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_stv6110(input, 0) < 0)
                        goto err_tuner;
                break;
        case DDB_TUNER_DVBS_ST_AA:
                if (demod_attach_stv0900(input, 1) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_stv6110(input, 1) < 0)
                        goto err_tuner;
                break;
        case DDB_TUNER_DVBS_STV0910:
                if (demod_attach_stv0910(input, 0) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_stv6111(input, 0) < 0)
                        goto err_tuner;
                break;
        case DDB_TUNER_DVBS_STV0910_PR:
                if (demod_attach_stv0910(input, 1) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_stv6111(input, 1) < 0)
                        goto err_tuner;
                break;
        case DDB_TUNER_DVBS_STV0910_P:
                if (demod_attach_stv0910(input, 0) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_stv6111(input, 1) < 0)
                        goto err_tuner;
                break;
        case DDB_TUNER_DVBCT_TR:
                if (demod_attach_drxk(input) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_tda18271(input) < 0)
                        goto err_tuner;
                break;
        case DDB_TUNER_DVBCT_ST:
                if (demod_attach_stv0367(input) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_tda18212(input, port->type) < 0)
                        goto err_tuner;
                break;
@@ -1507,7 +1507,7 @@ static int dvb_input_attach(struct ddb_input *input)
                else
                        par = 1;
                if (demod_attach_cxd28xx(input, par, osc24) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_tda18212(input, port->type) < 0)
                        goto err_tuner;
                break;
@@ -1518,7 +1518,7 @@ static int dvb_input_attach(struct ddb_input *input)
        case DDB_TUNER_DVBC2T2_SONY:
        case DDB_TUNER_ISDBT_SONY:
                if (demod_attach_cxd28xx(input, 0, osc24) < 0)
-                       return -ENODEV;
+                       goto err_detach;
                if (tuner_attach_tda18212(input, port->type) < 0)
                        goto err_tuner;
                break;
@@ -1529,11 +1529,13 @@ static int dvb_input_attach(struct ddb_input *input)
 
        if (dvb->fe) {
                if (dvb_register_frontend(adap, dvb->fe) < 0)
-                       return -ENODEV;
+                       goto err_detach;
 
                if (dvb->fe2) {
-                       if (dvb_register_frontend(adap, dvb->fe2) < 0)
-                               return -ENODEV;
+                       if (dvb_register_frontend(adap, dvb->fe2) < 0) {
+                               dvb_unregister_frontend(dvb->fe);
+                               goto err_detach;
+                       }
                        dvb->fe2->tuner_priv = dvb->fe->tuner_priv;
                        memcpy(&dvb->fe2->ops.tuner_ops,
                               &dvb->fe->ops.tuner_ops,
@@ -1545,12 +1547,18 @@ static int dvb_input_attach(struct ddb_input *input)
        return 0;
 
 err_tuner:
-       dev_warn(port->dev->dev, "tuner attach failed!\n");
+       dev_err(port->dev->dev, "tuner attach failed!\n");
 
        if (dvb->fe2)
                dvb_frontend_detach(dvb->fe2);
        if (dvb->fe)
                dvb_frontend_detach(dvb->fe);
+err_detach:
+       dvb_input_detach(input);
+
+       /* return error from ret if set */
+       if (ret < 0)
+               return ret;
 
        return -ENODEV;
 }
@@ -1981,8 +1989,8 @@ void ddb_ports_detach(struct ddb *dev)
 
                switch (port->class) {
                case DDB_PORT_TUNER:
-                       dvb_input_detach(port->input[0]);
                        dvb_input_detach(port->input[1]);
+                       dvb_input_detach(port->input[0]);
                        break;
                case DDB_PORT_CI:
                case DDB_PORT_LOOP: