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>
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index 3a50ce9..8b515a7 100644
--- a/drivers/media/common/tuners/tda18271-fe.c
+++ b/drivers/media/common/tuners/tda18271-fe.c
@@ -572,6 +572,7 @@
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 @@
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;