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Commit 2a80f296 authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
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[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: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 13b019bb

drivers/media/dvb-core/dvb_frontend.c

+1 −1
Original line number Diff line number Diff line
@@ -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)