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mac80211: minstrel: reduce MINSTREL_SCALE

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The loss of a bit of extra precision does not hurt the calculation, 12
bits is still enough to calculate probabilities well. Reducing the scale
makes it easier to avoid overflows

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2016-12-14 20:46:59 +01:00 committed by Johannes Berg
parent 1109dc392e
commit 0217eefa64
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/rc80211_minstrel.h
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@ -14,7 +14,7 @@
#define SAMPLE_COLUMNS 10 /* number of columns in sample table */
/* scaled fraction values */
#define MINSTREL_SCALE 16
#define MINSTREL_SCALE 12
#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)