commit 9cc712efc708bf2d25b6a6c013c66c42f2cfccd0
author José Adolfo Galdámez <josegalre@pac-rom.com> Wed Oct 21 21:52:13 2015 -0600
committer William Bellavance <flintman@flintmancomputers.com> Wed Feb 10 20:04:59 2016 -0500
tree f4b7b9d2354b77f6a63eacded1c5b32282c18abc
parent 64c363146fe8b4b26285d36fad0fc01b9c8c1285

Merge tag 'v3.4.110' into mm-6.0

Change-Id: I0afc69bce474139d1b70e062d72c0b8054529833
Signed-off-by: José Adolfo Galdámez <josegalre@pac-rom.com>

lib/bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index b46ce02..3ed0f82 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -605,12 +605,12 @@
 	unsigned a, b;
 	int c, old_c, totaldigits;
 	const char __user __force *ubuf = (const char __user __force *)buf;
-	int exp_digit, in_range;
+	int at_start, in_range;
 
 	totaldigits = c = 0;
 	bitmap_zero(maskp, nmaskbits);
 	do {
-		exp_digit = 1;
+		at_start = 1;
 		in_range = 0;
 		a = b = 0;
 
@@ -639,11 +639,10 @@
 				break;
 
 			if (c == '-') {
-				if (exp_digit || in_range)
+				if (at_start || in_range)
 					return -EINVAL;
 				b = 0;
 				in_range = 1;
-				exp_digit = 1;
 				continue;
 			}
 
@@ -653,16 +652,18 @@
 			b = b * 10 + (c - '0');
 			if (!in_range)
 				a = b;
-			exp_digit = 0;
+			at_start = 0;
 			totaldigits++;
 		}
 		if (!(a <= b))
 			return -EINVAL;
 		if (b >= nmaskbits)
 			return -ERANGE;
-		while (a <= b) {
-			set_bit(a, maskp);
-			a++;
+		if (!at_start) {
+			while (a <= b) {
+				set_bit(a, maskp);
+				a++;
+			}
 		}
 	} while (buflen && c == ',');
 	return 0;