[BUG: #215] userspace/snmpd: don't warn on wrsSpllDelCnt greather than 0

Instead, warn only on the increase of wrsSpllDelCnt.

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

doc/wrs_failures/snmp_objects.tex

@@ -183,9 +183,7 @@
     \texttt{\glshyperlink{WR-SWITCH-MIB::wrsSpllMlock}} equals to 0 (for
     Boundary Clock mode).\\
     \texttt{Warning} when \texttt{\glshyperlink{WR-SWITCH-MIB::wrsSpllDelCnt}}
-    is greater then 0 (for Grand Master mode) or
-    \texttt{\glshyperlink{WR-SWITCH-MIB::wrsSpllDelCnt}} has changed (for all
-    other modes).\\
+    has changed (for all modes).\\
     \underline{On error:}\\
     For GrandMaster WRS:
     \begin{pck_proc}

userspace/snmpd/wrsTimingStatusGroup.c

@@ -296,7 +296,7 @@ static void get_wrsSoftPLLStatus(void)
 
 	/* check if warning */
 	if (!t->wrsSoftPLLStatus) {
-		if (s->wrsSpllMode == WRS_SPLL_MODE_GRAND_MASTER && s->wrsSpllDelCnt > 0) {
+		if (s->wrsSpllMode == WRS_SPLL_MODE_GRAND_MASTER && s->wrsSpllDelCnt != spll_DelCnt_prev) {
 			t->wrsSoftPLLStatus = WRS_SOFTPLL_STATUS_WARNING;
 			snmp_log(LOG_WARNING, "SNMP: " SL_W " %s: "
 					  "SoftPLL in GrandMaster mode has unlocked from "