linux-kernel - [PATCH] xen: add missing MODULE

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Date: Tue, 11 Jun 2024 16:54:05 -0700
From: Jeff Johnson <quic_jjohnson@...cinc.com>
To: Juergen Gross <jgross@...e.com>,
        Stefano Stabellini
	<sstabellini@...nel.org>,
        Oleksandr Tyshchenko
	<oleksandr_tyshchenko@...m.com>
CC: <xen-devel@...ts.xenproject.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>,
        Jeff Johnson <quic_jjohnson@...cinc.com>
Subject: [PATCH] xen: add missing MODULE_DESCRIPTION() macros

With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/xen/xen-pciback/xen-pciback.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/xen/xen-evtchn.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/xen/xen-privcmd.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@...cinc.com>
---
Corrections to these descriptions are welcomed. I'm not an expert in
this code so in most cases I've taken these descriptions directly from
code comments, Kconfig descriptions, or git logs.  History has shown
that in some cases these are originally wrong due to cut-n-paste
errors, and in other cases the drivers have evolved such that the
original information is no longer accurate.
---
 drivers/xen/evtchn.c               | 1 +
 drivers/xen/privcmd-buf.c          | 1 +
 drivers/xen/privcmd.c              | 1 +
 drivers/xen/xen-pciback/pci_stub.c | 1 +
 4 files changed, 4 insertions(+)

diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
index f6a2216c2c87..9b7fcc7dbb38 100644
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -729,4 +729,5 @@ static void __exit evtchn_cleanup(void)
 module_init(evtchn_init);
 module_exit(evtchn_cleanup);
 
+MODULE_DESCRIPTION("Xen /dev/xen/evtchn device driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/xen/privcmd-buf.c b/drivers/xen/privcmd-buf.c
index 2fa10ca5be14..0f0dad427d7e 100644
--- a/drivers/xen/privcmd-buf.c
+++ b/drivers/xen/privcmd-buf.c
@@ -19,6 +19,7 @@
 
 #include "privcmd.h"
 
+MODULE_DESCRIPTION("Xen Mmap of hypercall buffers");
 MODULE_LICENSE("GPL");
 
 struct privcmd_buf_private {
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 67dfa4778864..b9b784633c01 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -48,6 +48,7 @@
 
 #include "privcmd.h"
 
+MODULE_DESCRIPTION("Xen hypercall passthrough driver");
 MODULE_LICENSE("GPL");
 
 #define PRIV_VMA_LOCKED ((void *)1)
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index e34b623e4b41..4faebbb84999 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -1708,5 +1708,6 @@ static void __exit xen_pcibk_cleanup(void)
 module_init(xen_pcibk_init);
 module_exit(xen_pcibk_cleanup);
 
+MODULE_DESCRIPTION("Xen PCI-device stub driver");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_ALIAS("xen-backend:pci");

---
base-commit: 83a7eefedc9b56fe7bfeff13b6c7356688ffa670
change-id: 20240611-md-drivers-xen-522fc8e7ef08