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V4L/DVB (8951): xc5000: dont pass devptr in xc5000_attach()

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Dont pass devptr in xc5000_attach, dont store it in xc5000_priv.
This pointer is passed into the tuner_callback function, which always
expects a pointer to fe->dvb->priv or i2c_adapter->algo_data.

This prevents future possible bugs in new drivers, such as using a "devptr"
other that the standard fe->dvb->priv in a DVB driver.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Michael Krufky 2008-09-06 14:56:58 -03:00 • committed by Mauro Carvalho Chehab
parent 2a6003c207
commit 3065096190
6 changed files with 16 additions and 27 deletions
drivers/media
common/tuners
xc5000.cxc5000.h
video
au0828
au0828-dvb.c
cx23885
cx23885-dvb.c
cx88
cx88-dvb.c
tuner-core.c

9
drivers/media/common/tuners/xc5000.c
View file

@ -59,7 +59,6 @@ struct xc5000_priv {
u8 video_standard;
u8 rf_mode;
void *devptr;
int (*tuner_callback) (void *priv, int command, int arg);
};
@ -234,7 +233,10 @@ static void xc5000_TunerReset(struct dvb_frontend *fe)
dprintk(1, "%s()\n", __func__);
if (priv->tuner_callback) {
ret = priv->tuner_callback(priv->devptr, XC5000_TUNER_RESET, 0);
ret = priv->tuner_callback(((fe->dvb) && (fe->dvb->priv)) ?
fe->dvb->priv :
priv->i2c_props.adap->algo_data,
XC5000_TUNER_RESET, 0);
if (ret)
printk(KERN_ERR "xc5000: reset failed\n");
} else
@ -950,7 +952,7 @@ static const struct dvb_tuner_ops xc5000_tuner_ops = {
struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
struct xc5000_config *cfg, void *devptr)
struct xc5000_config *cfg)
{
struct xc5000_priv *priv = NULL;
int instance;
@ -972,7 +974,6 @@ struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe,
case 1:
/* new tuner instance */
priv->bandwidth = BANDWIDTH_6_MHZ;
priv->devptr = devptr;
priv->if_khz = cfg->if_khz;
priv->tuner_callback = cfg->tuner_callback;

6
drivers/media/common/tuners/xc5000.h
View file

@ -49,13 +49,11 @@ struct xc5000_config {
(defined(CONFIG_MEDIA_TUNER_XC5000_MODULE) && defined(MODULE))
extern struct dvb_frontend* xc5000_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
struct xc5000_config *cfg,
void *devptr);
struct xc5000_config *cfg);
#else
static inline struct dvb_frontend* xc5000_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
struct xc5000_config *cfg,
void *devptr)
struct xc5000_config *cfg)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return NULL;

5
drivers/media/video/au0828/au0828-dvb.c
View file

@ -358,9 +358,8 @@ int au0828_dvb_register(struct au0828_dev *dev)
&hauppauge_hvr950q_config,
&dev->i2c_adap);
if (dvb->frontend != NULL)
dvb_attach(xc5000_attach, dvb->frontend,
&dev->i2c_adap,
&hauppauge_hvr950q_tunerconfig, dev);
dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap,
&hauppauge_hvr950q_tunerconfig);
break;
case AU0828_BOARD_HAUPPAUGE_HVR950Q_MXL:
dvb->frontend = dvb_attach(au8522_attach,

8
drivers/media/video/cx23885/cx23885-dvb.c
View file

@ -390,8 +390,8 @@ static int dvb_register(struct cx23885_tsport *port)
&dev->i2c_bus[0].i2c_adap);
if (port->dvb.frontend != NULL)
dvb_attach(xc5000_attach, port->dvb.frontend,
&i2c_bus->i2c_adap,
&hauppauge_hvr1500q_tunerconfig, port);
&i2c_bus->i2c_adap,
&hauppauge_hvr1500q_tunerconfig);
break;
case CX23885_BOARD_HAUPPAUGE_HVR1500:
i2c_bus = &dev->i2c_bus[1];
@ -471,8 +471,8 @@ static int dvb_register(struct cx23885_tsport *port)
&i2c_bus->i2c_adap);
if (port->dvb.frontend != NULL)
dvb_attach(xc5000_attach, port->dvb.frontend,
&i2c_bus->i2c_adap,
&dvico_xc5000_tunerconfig, port);
&i2c_bus->i2c_adap,
&dvico_xc5000_tunerconfig);
break;
case CX23885_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL_EXP: {
i2c_bus = &dev->i2c_bus[port->nr - 1];

12
drivers/media/video/cx88/cx88-dvb.c
View file

@ -813,13 +813,9 @@ static int dvb_register(struct cx8802_dev *dev)
&pinnacle_pctv_hd_800i_config,
&core->i2c_adap);
if (dev->dvb.frontend != NULL) {
/* tuner_config.video_dev must point to
* i2c_adap.algo_data
*/
if (!dvb_attach(xc5000_attach, dev->dvb.frontend,
&core->i2c_adap,
&pinnacle_pctv_hd_800i_tuner_config,
core->i2c_adap.algo_data))
&pinnacle_pctv_hd_800i_tuner_config))
goto frontend_detach;
}
break;
@ -874,13 +870,9 @@ static int dvb_register(struct cx8802_dev *dev)
&dvico_fusionhdtv7_config,
&core->i2c_adap);
if (dev->dvb.frontend != NULL) {
/* tuner_config.video_dev must point to
* i2c_adap.algo_data
*/
if (!dvb_attach(xc5000_attach, dev->dvb.frontend,
&core->i2c_adap,
&dvico_fusionhdtv7_tuner_config,
core->i2c_adap.algo_data))
&dvico_fusionhdtv7_tuner_config))
goto frontend_detach;
}
break;

3
drivers/media/video/tuner-core.c
View file

@ -452,8 +452,7 @@ static void set_type(struct i2c_client *c, unsigned int type,
xc5000_cfg.if_khz = 5380;
xc5000_cfg.tuner_callback = t->tuner_callback;
if (!dvb_attach(xc5000_attach,
&t->fe, t->i2c->adapter, &xc5000_cfg,
c->adapter->algo_data))
&t->fe, t->i2c->adapter, &xc5000_cfg))
goto attach_failed;
xc_tuner_ops = &t->fe.ops.tuner_ops;