[PKT_SCHED]: Fix range in psched_tod_diff() to 0..bound

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h
index 87496e3aa3302a4e8dc42f5c4f53a22f550d5008..7352e455053cc857e70f0cb1e008eb7adabbe011 100644 (file)
--- a/include/net/pkt_sched.h
+++ b/include/net/pkt_sched.h
@@ -140,7 +140,7 @@ psched_tod_diff(int delta_sec, int bound)
        if (bound <= 1000000 || delta_sec > (0x7FFFFFFF/1000000)-1)
                return bound;
        delta = delta_sec * 1000000;
-       if (delta > bound)
+       if (delta > bound || delta < 0)
                delta = bound;
        return delta;
 }
@@ -156,7 +156,8 @@ psched_tod_diff(int delta_sec, int bound)
                   __delta += 1000000; \
           case 1: \
                   __delta += 1000000; \
-          case 0: ; \
+          case 0: \
+                  __delta = abs(__delta); \
           } \
           __delta; \
 })