From 63d9698d5c7a088b2eb8220a9a44c8adbca86326 Mon Sep 17 00:00:00 2001
From: Jeremiah <barrar@users.noreply.github.com>
Date: Sat, 13 May 2017 19:07:05 -0700
Subject: faster and less bits... again

---
 tmk_core/common/keyboard.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

(limited to 'tmk_core')

diff --git a/tmk_core/common/keyboard.c b/tmk_core/common/keyboard.c
index d8b5dc4031..fa17ffca25 100644
--- a/tmk_core/common/keyboard.c
+++ b/tmk_core/common/keyboard.c
@@ -74,20 +74,19 @@ static matrix_row_t get_real_keys(uint8_t row, matrix_row_t rowdata){
     return out;
 }
 
-
-static inline bool countones(matrix_row_t data)
+static inline bool countones(matrix_row_t row)
 {
     int count = 0;
-    for (int col = 0; col < MATRIX_COLS; col++) {
-        if (data & (1<<col)){
-            count++;
-        }
+    while (row > 0){
+        count += 1;
+        row &= row-1;
     }
     if (count > 1){
         return true;
     }
     return false;
 }
+
 static inline bool has_ghost_in_row(uint8_t row, matrix_row_t rowdata)
 {
     rowdata = get_real_keys(row, rowdata);
-- 
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