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yaml --- r: 347885 b: refs/heads/master c: c4e1849 h: refs/heads/master i: 347883: eb40905 v: v3
git-mirror · Dec 21, 2012 · 979a7cc · 979a7cc
1 parent a34a9d5
commit 979a7cc
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 154b454edaf6d94a69016db6c342c57fa935bbe9
+refs/heads/master: c4e18497d8fd92eef2c6e7eadcc1a107ccd115ea
diff --git a/trunk/include/linux/kernel.h b/trunk/include/linux/kernel.h
@@ -77,13 +77,15 @@
 
 /*
  * Divide positive or negative dividend by positive divisor and round
- * to closest integer. Result is undefined for negative divisors.
+ * to closest integer. Result is undefined for negative divisors and
+ * for negative dividends if the divisor variable type is unsigned.
  */
 #define DIV_ROUND_CLOSEST(x, divisor)(			\
 {							\
 	typeof(x) __x = x;				\
 	typeof(divisor) __d = divisor;			\
-	(((typeof(x))-1) > 0 || (__x) > 0) ?		\
+	(((typeof(x))-1) > 0 ||				\
+	 ((typeof(divisor))-1) > 0 || (__x) > 0) ?	\
 		(((__x) + ((__d) / 2)) / (__d)) :	\
 		(((__x) - ((__d) / 2)) / (__d));	\
 }							\