hwmon: (lm85) Simplify RANGE_TO_REG
Function RANGE_TO_REG can easily be simplified. Credits go to Herbert
Poetzl for indirectly suggesting this to me. I tested that the new
implementation returns the same result as the original implementation
for all input values.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Herbert Poetzl <herbert@13thfloor.at>
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 4ee9388..94a10ec 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -174,20 +174,13 @@
{
int i;
- if (range >= lm85_range_map[15])
- return 15;
-
/* Find the closest match */
- for (i = 14; i >= 0; --i) {
- if (range >= lm85_range_map[i]) {
- if ((lm85_range_map[i + 1] - range) <
- (range - lm85_range_map[i]))
- return i + 1;
- return i;
- }
+ for (i = 0; i < 15; ++i) {
+ if (range <= (lm85_range_map[i] + lm85_range_map[i + 1]) / 2)
+ break;
}
- return 0;
+ return i;
}
#define RANGE_FROM_REG(val) lm85_range_map[(val) & 0x0f]