diff options
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_frontend.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index 0cb6c09719f2..d13ebcb0c6b6 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -838,6 +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; } |