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 <cr...@iki.fi>
---
drivers/media/dvb-core/dvb_frontend.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/dvb-core/dvb_frontend.c
b/drivers/media/dvb-core/dvb_frontend.c
index 882ca41..a894d4c 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)
--
http://palosaari.fi/
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