[PATCH 5.15 135/277] virtio_console: eliminate anonymous module_init & module_exit

From: Greg Kroah-Hartman
Date: Tue Apr 12 2022 - 03:25:46 EST


From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

[ Upstream commit fefb8a2a941338d871e2d83fbd65fbfa068857bd ]

Eliminate anonymous module_init() and module_exit(), which can lead to
confusion or ambiguity when reading System.map, crashes/oops/bugs,
or an initcall_debug log.

Give each of these init and exit functions unique driver-specific
names to eliminate the anonymous names.

Example 1: (System.map)
ffffffff832fc78c t init
ffffffff832fc79e t init
ffffffff832fc8f8 t init

Example 2: (initcall_debug log)
calling init+0x0/0x12 @ 1
initcall init+0x0/0x12 returned 0 after 15 usecs
calling init+0x0/0x60 @ 1
initcall init+0x0/0x60 returned 0 after 2 usecs
calling init+0x0/0x9a @ 1
initcall init+0x0/0x9a returned 0 after 74 usecs

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Reviewed-by: Amit Shah <amit@xxxxxxxxxx>
Cc: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Link: https://lore.kernel.org/r/20220316192010.19001-3-rdunlap@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/char/virtio_console.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 3adf04766e98..77bc993d7513 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -2236,7 +2236,7 @@ static struct virtio_driver virtio_rproc_serial = {
.remove = virtcons_remove,
};

-static int __init init(void)
+static int __init virtio_console_init(void)
{
int err;

@@ -2271,7 +2271,7 @@ static int __init init(void)
return err;
}

-static void __exit fini(void)
+static void __exit virtio_console_fini(void)
{
reclaim_dma_bufs();

@@ -2281,8 +2281,8 @@ static void __exit fini(void)
class_destroy(pdrvdata.class);
debugfs_remove_recursive(pdrvdata.debugfs_dir);
}
-module_init(init);
-module_exit(fini);
+module_init(virtio_console_init);
+module_exit(virtio_console_fini);

MODULE_DESCRIPTION("Virtio console driver");
MODULE_LICENSE("GPL");
--
2.35.1