allow old syntax of SET SUBSCRIBE_EVENTS_NP command (RHEL-29738)

Resolves: RHEL-29738

linuxptp-subscribe.patch

@@ -0,0 +1,26 @@
+commit b421a4c66ce636adff150dd1aa8eafa981c2693d
+Author: Miroslav Lichvar <mlichvar@redhat.com>
+Date:   Wed Jan 3 14:45:51 2024 +0100
+
+    pmc: Allow missing values in SUBSCRIBE_EVENTS_NP command.
+    
+    Don't require all supported notifications to be specified in the command
+    for compatibility with older scripts.
+    
+    Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
+
+diff --git a/pmc_common.c b/pmc_common.c
+index 62e34a6..b88cfc2 100644
+--- a/pmc_common.c
++++ b/pmc_common.c
+@@ -310,8 +310,8 @@ static void do_set_action(struct pmc *pmc, int action, int index, char *str)
+ 			     onoff_port_state,
+ 			     onoff_time_status,
+ 			     onoff_parent_data_set);
+-		if (cnt != 4) {
+-			fprintf(stderr, "%s SET needs 4 values\n",
++		if (cnt < 2) {
++			fprintf(stderr, "%s SET needs at least 2 values\n",
+ 				idtab[index].name);
+ 			break;
+ 		}

linuxptp.spec

@@ -29,6 +29,8 @@ Source22:	linuxptp.te
 
 # limit unicast message rate per address and grant duration
 Patch1:		linuxptp-ucastrate.patch
+# allow old syntax of SET SUBSCRIBE_EVENTS_NP command
+Patch2:		linuxptp-subscribe.patch
 
 BuildRequires:	gcc gcc-c++ make systemd