diff options
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_frontend.c')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_frontend.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index f50ca7292a7d..d13ebcb0c6b6 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -72,6 +72,7 @@ MODULE_PARM_DESC(dvb_mfe_wait_time, "Wait up to <mfe_wait_time> seconds on open( #define FESTATE_ZIGZAG_FAST 32 #define FESTATE_ZIGZAG_SLOW 64 #define FESTATE_DISEQC 128 +#define FESTATE_ERROR 256 #define FESTATE_WAITFORLOCK (FESTATE_TUNING_FAST | FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_FAST | FESTATE_ZIGZAG_SLOW | FESTATE_DISEQC) #define FESTATE_SEARCHING_FAST (FESTATE_TUNING_FAST | FESTATE_ZIGZAG_FAST) #define FESTATE_SEARCHING_SLOW (FESTATE_TUNING_SLOW | FESTATE_ZIGZAG_SLOW) @@ -269,6 +270,7 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra { int autoinversion; int ready = 0; + int fe_set_err = 0; struct dvb_frontend_private *fepriv = fe->frontend_priv; int original_inversion = fepriv->parameters.inversion; u32 original_frequency = fepriv->parameters.frequency; @@ -345,7 +347,11 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra if (autoinversion) fepriv->parameters.inversion = fepriv->inversion; if (fe->ops.set_frontend) - fe->ops.set_frontend(fe, &fepriv->parameters); + fe_set_err = fe->ops.set_frontend(fe, &fepriv->parameters); + if (fe_set_err < 0) { + fepriv->state = FESTATE_ERROR; + return fe_set_err; + } fepriv->parameters.frequency = original_frequency; fepriv->parameters.inversion = original_inversion; @@ -357,6 +363,7 @@ static int dvb_frontend_swzigzag_autotune(struct dvb_frontend *fe, int check_wra static void dvb_frontend_swzigzag(struct dvb_frontend *fe) { fe_status_t s = 0; + int retval = 0; struct dvb_frontend_private *fepriv = fe->frontend_priv; /* if we've got no parameters, just keep idling */ @@ -370,8 +377,12 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe) if (fepriv->tune_mode_flags & FE_TUNE_MODE_ONESHOT) { if (fepriv->state & FESTATE_RETUNE) { if (fe->ops.set_frontend) - fe->ops.set_frontend(fe, &fepriv->parameters); - fepriv->state = FESTATE_TUNED; + retval = fe->ops.set_frontend(fe, + &fepriv->parameters); + if (retval < 0) + fepriv->state = FESTATE_ERROR; + else + fepriv->state = FESTATE_TUNED; } fepriv->delay = 3*HZ; fepriv->quality = 0; @@ -449,7 +460,11 @@ static void dvb_frontend_swzigzag(struct dvb_frontend *fe) fepriv->delay = fepriv->min_delay; /* peform a tune */ - if (dvb_frontend_swzigzag_autotune(fe, fepriv->check_wrapped)) { + retval = dvb_frontend_swzigzag_autotune(fe, + fepriv->check_wrapped); + if (retval < 0) { + return; + } else if (retval) { /* OK, if we've run out of trials at the fast speed. * Drop back to slow for the _next_ attempt */ fepriv->state = FESTATE_SEARCHING_SLOW; @@ -823,6 +838,15 @@ static int dvb_frontend_check_parameters(struct dvb_frontend *fe, } } + /* check for supported modulation */ + if (fe->ops.info.type == FE_QAM && + (parms->u.qam.modulation > QAM_AUTO || + !((1 << (parms->u.qam.modulation + 10)) & fe->ops.info.caps))) { + printk(KERN_WARNING "DVB: adapter %i frontend %i modulation %u not supported\n", + fe->dvb->num, fe->id, parms->u.qam.modulation); + return -EINVAL; + } + return 0; } @@ -1499,7 +1523,8 @@ static int dvb_frontend_ioctl_legacy(struct inode *inode, struct file *file, /* if retune was requested but hasn't occured yet, prevent * that user get signal state from previous tuning */ - if(fepriv->state == FESTATE_RETUNE) { + if (fepriv->state == FESTATE_RETUNE || + fepriv->state == FESTATE_ERROR) { err=0; *status = 0; break; |