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V4L/DVB (4874): Fix oops on symbol rate==0

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The tda10086 causes an oops (divide by zero) if a zero symbol rate is used;
this prevents this.

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Andrew de Quincey 2006-11-22 18:01:21 -03:00 committed by Mauro Carvalho Chehab
parent f7668162a3
commit 221a09d5c4
1 changed files with 4 additions and 0 deletions
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4
drivers/media/dvb/frontends/tda10086.c
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@ -441,6 +441,10 @@ static int tda10086_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_pa
dprintk ("%s\n", __FUNCTION__); 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) // calculate the updated frequency (note: we convert from Hz->kHz)
tmp64 = tda10086_read_byte(state, 0x52); tmp64 = tda10086_read_byte(state, 0x52);
tmp64 |= (tda10086_read_byte(state, 0x51) << 8); tmp64 |= (tda10086_read_byte(state, 0x51) << 8);