diff options
Diffstat (limited to 'drivers/media/tuners/fc0011.c')
| -rw-r--r-- | drivers/media/tuners/fc0011.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/media/tuners/fc0011.c b/drivers/media/tuners/fc0011.c index e4882546c28..3932aa81e18 100644 --- a/drivers/media/tuners/fc0011.c +++ b/drivers/media/tuners/fc0011.c @@ -183,8 +183,7 @@ static int fc0011_set_params(struct dvb_frontend *fe) unsigned int i, vco_retries; u32 freq = p->frequency / 1000; u32 bandwidth = p->bandwidth_hz / 1000; - u32 fvco, xin, xdiv, xdivr; - u16 frac; + u32 fvco, xin, frac, xdiv, xdivr; u8 fa, fp, vco_sel, vco_cal; u8 regs[FC11_NR_REGS] = { }; @@ -221,18 +220,15 @@ 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) frac += 32786; if (!frac) xin = 0; - else if (frac < 511) - xin = 512; - else if (frac < 65026) - xin = frac; else - xin = 65024; + xin = clamp_t(u32, frac, 512, 65024); regs[FC11_REG_XINHI] = xin >> 8; regs[FC11_REG_XINLO] = xin; @@ -247,8 +243,8 @@ static int fc0011_set_params(struct dvb_frontend *fe) fa += 8; } if (fp > 0x1F) { - fp &= 0x1F; - fa &= 0xF; + fp = 0x1F; + fa = 0xF; } if (fa >= fp) { dev_warn(&priv->i2c->dev, @@ -351,6 +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); @@ -432,7 +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; |