Switch helpers tc_core_{time2ktime,ktime2time} from long to unsigned as well.

Follow up patch to "Fix overflow in time2tick / tick2time." which switches
the remaining two helper functions from long to unsigned as well.
These functions are only used in "tc/q_hfsc.c" where both the passed argument
and the place the return value is stored are unsigned/u32 variables, so this
change should be safe to make but hasn't been tested as extensively as the
time2tick patch.
Signed-off-by: Andreas Henriksson <andreas@fatal.se>
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>

tc/tc_core.c

@@ -45,12 +45,12 @@ unsigned tc_core_tick2time(unsigned tick)
 	return tick/tick_in_usec;
 }
 
-long tc_core_time2ktime(long time)
+unsigned tc_core_time2ktime(unsigned time)
 {
 	return time * clock_factor;
 }
 
-long tc_core_ktime2time(long ktime)
+unsigned tc_core_ktime2time(unsigned ktime)
 {
 	return ktime / clock_factor;
 }

tc/tc_core.h

@@ -9,8 +9,8 @@
 int  tc_core_time2big(long time);
 unsigned tc_core_time2tick(unsigned time);
 unsigned tc_core_tick2time(unsigned tick);
-long tc_core_time2ktime(long time);
-long tc_core_ktime2time(long ktime);
+unsigned tc_core_time2ktime(unsigned time);
+unsigned tc_core_ktime2time(unsigned ktime);
 unsigned tc_calc_xmittime(unsigned rate, unsigned size);
 unsigned tc_calc_xmitsize(unsigned rate, unsigned ticks);
 int tc_calc_rtable(unsigned bps, __u32 *rtab, int cell_log, unsigned mtu, unsigned mpu);