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authorFelix Fietkau <nbd@nbd.name>2016-12-14 22:46:59 +0300
committerJohannes Berg <johannes.berg@intel.com>2016-12-15 13:07:52 +0300
commit0217eefa64509d63fbe8d1205310bafb2355cf4d (patch)
tree7cb77309a9e60c57f211791537ab3835d2eb7531 /net/mac80211/rc80211_minstrel.h
parent1109dc392ea0248f7bfca3537011aa7afaa05cee (diff)
downloadlinux-0217eefa64509d63fbe8d1205310bafb2355cf4d.tar.xz
mac80211: minstrel: reduce MINSTREL_SCALE
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>
Diffstat (limited to 'net/mac80211/rc80211_minstrel.h')
-rw-r--r--net/mac80211/rc80211_minstrel.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/mac80211/rc80211_minstrel.h b/net/mac80211/rc80211_minstrel.h
index 94b89b1b406c..03716fddaf24 100644
--- a/net/mac80211/rc80211_minstrel.h
+++ b/net/mac80211/rc80211_minstrel.h
@@ -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)