diff options
| author | Antti Palosaari <crope@iki.fi> | 2015-04-14 15:12:54 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-05-20 14:01:46 -0300 |
| commit | 2a80f296422a01178d0a993479369e94f5830127 (patch) | |
| tree | 2bb9c1e96dd036f587d487811e33b879eca968dc /drivers/media/dvb-core | |
| parent | 13b019bbd170d788b1461c2e00b4578a07541dc5 (diff) | |
| download | linux-2a80f296422a01178d0a993479369e94f5830127.tar.bz2 | |
[media] dvb-core: fix 32-bit overflow during bandwidth calculation
Frontend bandwidth calculation overflows on very high DVB-S/S2
symbol rates. Use mult_frac() macro in order to keep calculation
correct.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-core')
| -rw-r--r-- | drivers/media/dvb-core/dvb_frontend.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 882ca417f328..a894d4c99ee8 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2216,7 +2216,7 @@ static int dtv_set_frontend(struct dvb_frontend *fe) break; } if (rolloff) - c->bandwidth_hz = (c->symbol_rate * rolloff) / 100; + c->bandwidth_hz = mult_frac(c->symbol_rate, rolloff, 100); /* force auto frequency inversion if requested */ if (dvb_force_auto_inversion) |