Input: atmel_mxt_ts - use scnprintf for object sysfs entry

Using scnprintf() is a cleaner way to ensure that we don't overwrite the
PAGE_SIZE sysfs output buffer.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

drivers/input/touchscreen/atmel_mxt_ts.c

@@ -904,17 +904,13 @@ static ssize_t mxt_object_show(struct device *dev,
 	for (i = 0; i < data->info.object_num; i++) {
 		object = data->object_table + i;
 
-		count += snprintf(buf + count, PAGE_SIZE - count,
+		count += scnprintf(buf + count, PAGE_SIZE - count,
 				"Object[%d] (Type %d)\n",
 				i + 1, object->type);
-		if (count >= PAGE_SIZE)
-			return PAGE_SIZE - 1;
 
 		if (!mxt_object_readable(object->type)) {
-			count += snprintf(buf + count, PAGE_SIZE - count,
+			count += scnprintf(buf + count, PAGE_SIZE - count,
 					"\n");
-			if (count >= PAGE_SIZE)
-				return PAGE_SIZE - 1;
 			continue;
 		}
 
@@ -924,15 +920,11 @@ static ssize_t mxt_object_show(struct device *dev,
 			if (error)
 				return error;
 
-			count += snprintf(buf + count, PAGE_SIZE - count,
+			count += scnprintf(buf + count, PAGE_SIZE - count,
 					"\t[%2d]: %02x (%d)\n", j, val, val);
-			if (count >= PAGE_SIZE)
-				return PAGE_SIZE - 1;
 		}
 
-		count += snprintf(buf + count, PAGE_SIZE - count, "\n");
-		if (count >= PAGE_SIZE)
-			return PAGE_SIZE - 1;
+		count += scnprintf(buf + count, PAGE_SIZE - count, "\n");
 	}
 
 	return count;