net: fill in MODULE_DESCRIPTION()s for ppp

W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the PPP modules.

Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240214152741.670178-6-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
diff --git a/drivers/net/ppp/bsd_comp.c b/drivers/net/ppp/bsd_comp.c
index db0dc36..5595459 100644
--- a/drivers/net/ppp/bsd_comp.c
+++ b/drivers/net/ppp/bsd_comp.c
@@ -1166,5 +1166,6 @@
 
 module_init(bsdcomp_init);
 module_exit(bsdcomp_cleanup);
+MODULE_DESCRIPTION("PPP BSD-Compress compression module");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS("ppp-compress-" __stringify(CI_BSD_COMPRESS));
diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
index 125793d..c33c3db 100644
--- a/drivers/net/ppp/ppp_async.c
+++ b/drivers/net/ppp/ppp_async.c
@@ -87,6 +87,7 @@
 static int flag_time = HZ;
 module_param(flag_time, int, 0);
 MODULE_PARM_DESC(flag_time, "ppp_async: interval between flagged packets (in clock ticks)");
+MODULE_DESCRIPTION("PPP async serial channel module");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_LDISC(N_PPP);
 
diff --git a/drivers/net/ppp/ppp_deflate.c b/drivers/net/ppp/ppp_deflate.c
index e6d48e5..4d2ff63 100644
--- a/drivers/net/ppp/ppp_deflate.c
+++ b/drivers/net/ppp/ppp_deflate.c
@@ -630,6 +630,7 @@
 
 module_init(deflate_init);
 module_exit(deflate_cleanup);
+MODULE_DESCRIPTION("PPP Deflate compression module");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS("ppp-compress-" __stringify(CI_DEFLATE));
 MODULE_ALIAS("ppp-compress-" __stringify(CI_DEFLATE_DRAFT));
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index 0193af2..3dd52bf 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -3604,6 +3604,7 @@
 EXPORT_SYMBOL(ppp_output_wakeup);
 EXPORT_SYMBOL(ppp_register_compressor);
 EXPORT_SYMBOL(ppp_unregister_compressor);
+MODULE_DESCRIPTION("Generic PPP layer driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_CHARDEV(PPP_MAJOR, 0);
 MODULE_ALIAS_RTNL_LINK("ppp");
diff --git a/drivers/net/ppp/ppp_synctty.c b/drivers/net/ppp/ppp_synctty.c
index 52d05ce..45bf59a 100644
--- a/drivers/net/ppp/ppp_synctty.c
+++ b/drivers/net/ppp/ppp_synctty.c
@@ -724,5 +724,6 @@
 
 module_init(ppp_sync_init);
 module_exit(ppp_sync_cleanup);
+MODULE_DESCRIPTION("PPP synchronous TTY channel module");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_LDISC(N_SYNC_PPP);