From 221a09d5c4cb8384d9be74db60f37a5752675255 Mon Sep 17 00:00:00 2001 From: Andrew de Quincey Date: Wed, 22 Nov 2006 18:01:21 -0300 Subject: [PATCH] V4L/DVB (4874): Fix oops on symbol rate==0 The tda10086 causes an oops (divide by zero) if a zero symbol rate is used; this prevents this. Signed-off-by: Andrew de Quincey Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/tda10086.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/dvb/frontends/tda10086.c b/drivers/media/dvb/frontends/tda10086.c index 7456b0b9976b..4c27a2d90a38 100644 --- a/drivers/media/dvb/frontends/tda10086.c +++ b/drivers/media/dvb/frontends/tda10086.c @@ -441,6 +441,10 @@ static int tda10086_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_pa dprintk ("%s\n", __FUNCTION__); + // check for invalid symbol rate + if (fe_params->u.qpsk.symbol_rate < 500000) + return -EINVAL; + // calculate the updated frequency (note: we convert from Hz->kHz) tmp64 = tda10086_read_byte(state, 0x52); tmp64 |= (tda10086_read_byte(state, 0x51) << 8);