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| author | Michael Krufky <mkrufky@kernellabs.com> | 2009-09-27 22:00:13 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 21:40:23 +0100 |
| commit | 3986bd116f3c53d695aef1781e14b6c5670d4cdd (patch) | |
| tree | 805fd3f8cac0c4f60e1ec24c6e9f74783d0b2367 /drivers/media/common | |
| parent | V4L/DVB (13108): tda8290: enable deemphasis_50 module parameter (diff) | |
| download | linux-3986bd116f3c53d695aef1781e14b6c5670d4cdd.tar.xz linux-3986bd116f3c53d695aef1781e14b6c5670d4cdd.zip | |
V4L/DVB (13110): tda18271: use temporary variables in tda18271_rf_tracking_filters_init
Use temporary variables for signed calulations between unsigned values
Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common')
| -rw-r--r-- | drivers/media/common/tuners/tda18271-fe.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c index 3a50ce96fcb9..8b515a7d93f8 100644 --- a/drivers/media/common/tuners/tda18271-fe.c +++ b/drivers/media/common/tuners/tda18271-fe.c @@ -572,6 +572,7 @@ static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq) struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state; unsigned char *regs = priv->tda18271_regs; int bcal, rf, i; + s32 divisor, dividend; #define RF1 0 #define RF2 1 #define RF3 2 @@ -614,15 +615,17 @@ static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq) map[i].rf1 = rf_freq[RF1] / 1000; break; case RF2: - map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] - - prog_cal[RF1] + prog_tab[RF1]) / - (s32)((rf_freq[RF2] - rf_freq[RF1]) / 1000); + dividend = (s32)(prog_cal[RF2] - prog_tab[RF2]) - + (s32)(prog_cal[RF1] + prog_tab[RF1]); + divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000; + map[i].rf_a1 = (dividend / divisor); map[i].rf2 = rf_freq[RF2] / 1000; break; case RF3: - map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] - - prog_cal[RF2] + prog_tab[RF2]) / - (s32)((rf_freq[RF3] - rf_freq[RF2]) / 1000); + dividend = (s32)(prog_cal[RF3] - prog_tab[RF3]) - + (s32)(prog_cal[RF2] + prog_tab[RF2]); + divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000; + map[i].rf_a2 = (dividend / divisor); map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2]; map[i].rf3 = rf_freq[RF3] / 1000; break; |