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authorJohan Hovold <johan@kernel.org>2015-02-16 13:17:33 +0700
committerJohan Hovold <johan@kernel.org>2015-02-26 17:06:39 +0100
commit5ee0089b1f7057d8f783db37b2a8116cd114f6e5 (patch)
treeb5616499da8fb19ed5e81c4cf3a73e0696dda600 /drivers/usb
parentf6950344d3cf4a1e231b5828b50c4ac168db3886 (diff)
downloadlinux-5ee0089b1f7057d8f783db37b2a8116cd114f6e5.tar.bz2
USB: console: add dummy __module_get
Add call to __module_get when initialising the fake tty in usb_console_setup to match the module_put in release_one_tty. Note that the tty-driver (i.e. usb-serial core) must be compiled-in to enable the usb console so the __module_get is essentially a noop as driver->owner will be null. Reported-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/serial/console.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index 29fa1c3d0089..3806e7014199 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -14,6 +14,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/console.h>
@@ -144,6 +145,7 @@ static int usb_console_setup(struct console *co, char *options)
init_ldsem(&tty->ldisc_sem);
INIT_LIST_HEAD(&tty->tty_files);
kref_get(&tty->driver->kref);
+ __module_get(tty->driver->owner);
tty->ops = &usb_console_fake_tty_ops;
if (tty_init_termios(tty)) {
retval = -ENOMEM;