diff options
| author | Michael Büsch <m@bues.ch> | 2013-02-07 12:19:30 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-02-08 17:51:09 -0200 |
| commit | aadb4640109b76cc9d0e1d8ce6b7bc3258a89170 (patch) | |
| tree | 9f09447d880103463d46d5faef0bd40bbfae54bf /drivers/media | |
| parent | 03a497d4b4c5205f6a365c4673e21298e681a8a6 (diff) | |
[media] fc0011: Add some sanity checks and cleanups
Add some sanity checks to the calculations and make the REG_16 register write consistent
with the other ones.
Signed-off-by: Michael Buesch <m@bues.ch>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/tuners/fc0011.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/media/tuners/fc0011.c b/drivers/media/tuners/fc0011.c index f87aa5a8b8e..3932aa81e18 100644 --- a/drivers/media/tuners/fc0011.c +++ b/drivers/media/tuners/fc0011.c @@ -220,6 +220,7 @@ static int fc0011_set_params(struct dvb_frontend *fe) /* Calc XIN. The PLL reference frequency is 18 MHz. */ xdiv = fvco / 18000; + WARN_ON(xdiv > 0xFF); frac = fvco - xdiv * 18000; frac = (frac << 15) / 18000; if (frac >= 16384) @@ -346,6 +347,8 @@ static int fc0011_set_params(struct dvb_frontend *fe) vco_cal &= FC11_VCOCAL_VALUEMASK; switch (vco_sel) { + default: + WARN_ON(1); case 0: if (vco_cal < 8) { regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2); @@ -427,7 +430,8 @@ static int fc0011_set_params(struct dvb_frontend *fe) err = fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]); if (err) return err; - err = fc0011_writereg(priv, FC11_REG_16, 0xB); + regs[FC11_REG_16] = 0xB; + err = fc0011_writereg(priv, FC11_REG_16, regs[FC11_REG_16]); if (err) return err; |