[IA64] Replace explicit jiffies tests with time_* macros.

In arch/ia64/sn/kernel/xpc_{main,partition}.c

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/sn/kernel/xpc_partition.c b/arch/ia64/sn/kernel/xpc_partition.c
index 7ba4032..9e97c26 100644
--- a/arch/ia64/sn/kernel/xpc_partition.c
+++ b/arch/ia64/sn/kernel/xpc_partition.c
@@ -877,7 +877,7 @@
 	disengaged = (xpc_partition_engaged(1UL << partid) == 0);
 	if (part->disengage_request_timeout) {
 		if (!disengaged) {
-			if (jiffies < part->disengage_request_timeout) {
+			if (time_before(jiffies, part->disengage_request_timeout)) {
 				/* timelimit hasn't been reached yet */
 				return 0;
 			}