HACK: Use "0xDE" instead of "0xDEC" for the major number

Workaround the issues that the com_on_air_cs.ko kernel module could not be loaded:

insmod com_on_air_cs.ko
-> insmod: ERROR: could not insert module com_on_air_cs.ko: Invalid parameters

dmesg
-> CHRDEV "com_on_air_cs" major requested (3564) is greater than the maximum (511)

CHRDEV_MAJOR_MAX is set to "512" in the kernel
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/include/linux/fs.h
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/fs/char_dev.c

com_on_air_cs uses 0xDEC (int 3564) which is greater than this maximum.
 -> Workaround: Use 0xDE (int  222) instead.

This already conflicts with a reserved (but probably not widely used) allocation:
https://www.kernel.org/doc/Documentation/admin-guide/devices.txt

Real fix:
* Use Dynamic Major Number allocation instead of assigning a static one.

com-on-air_cs-linux/Makefile

@@ -32,7 +32,7 @@ reload:
 
 node: $(NODE)
 $(NODE):
-	mknod $@ --mode 660 c 3564 0  ###  3564 == 0xDEC
+	mknod $@ --mode 660 c 222 0  ###  222 == 0xDE
 #	chgrp dect $(NODE)
 
 read: node coa_read

com-on-air_cs-linux/com_on_air.c

@@ -745,7 +745,7 @@ static int __init init_com_on_air_cs(void)
 		goto init_out_3;
 	}
 
-	ret = register_chrdev(0xDEC, COA_DEVICE_NAME, &coa_fops);
+	ret = register_chrdev(0xDE, COA_DEVICE_NAME, &coa_fops);
 	if (ret < 0)
 	{
 		printk("couldn't register_chrdev()\n");
@@ -773,7 +773,7 @@ static int __init init_com_on_air_cs(void)
 init_out_0:
         kfifo_free(&dev->rx_fifo);
 init_out_1:
-	unregister_chrdev(0xDEC, COA_DEVICE_NAME);
+	unregister_chrdev(0xDE, COA_DEVICE_NAME);
 init_out_2:
 	pcmcia_unregister_driver(&coa_driver);
 init_out_3:
@@ -787,7 +787,7 @@ static void __exit exit_com_on_air_cs(void)
 
 	if (!dev) return;
 
-	unregister_chrdev(0xDEC, COA_DEVICE_NAME);
+	unregister_chrdev(0xDE, COA_DEVICE_NAME);
 
 	pcmcia_unregister_driver(&coa_driver);
 

com-on-air_cs-linux/tools/coa_syncsniff.c

@@ -136,7 +136,7 @@ int main(int argc, char *argv[])
 	write_global_header(pcap);
 
 	//sniff-loop
-        while (0xDEC + 't')
+        while (0xDE + 't')
 	{
 		struct sniffed_packet buf;
 	        while (sizeof(struct sniffed_packet) == (ret = read(d, &buf, (sizeof(struct sniffed_packet)))))

com-on-air_cs-linux/tools/dect_cli.c

@@ -1001,7 +1001,7 @@ void mainloop(void)
 
 	int ret;
 
-	while (0xDEC + 'T')
+	while (0xDE + 'T')
 	{
 		tv.tv_sec  = 1;
 		tv.tv_usec = 0;

com-on-air_cs-linux/tools/dectshark/scanmode_gui.cpp

@@ -259,7 +259,7 @@ void *scanthread(void *threadid)
 	}
 
 
-	while(0xDEC + 'T')		// ;)
+	while(0xDE + 'T')		// ;)
 	{
 		dect_found found;
 		

com-on-air_cs-linux/tools/dectshark/syncmode_gui.cpp

@@ -263,7 +263,7 @@ void *syncthread(void *threadid)
 
 	psaver.openfilerfpi(RFPI);
 
-	while (0xDEC + 'T')
+	while (0xDE + 'T')
 	{
 		tv.tv_sec  = 1;
 		tv.tv_usec = 0;