diff options
| author | Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2015-07-20 17:27:21 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-21 10:05:42 -0700 |
| commit | 1042a41280224603cc6e6c282d4811bcfd79a251 (patch) | |
| tree | d232181e04f6f86b71e98a12d3e4b5568a316162 | |
| parent | 7aa3b3b1d7838a75ad91fce91f187d26aacaa682 (diff) | |
auxdisplay: ks0108: fix refcount
commit bab383de3b84e584b0f09227151020b2a43dc34c upstream.
parport_find_base() will implicitly do parport_get_port() which
increases the refcount. Then parport_register_device() will again
increment the refcount. But while unloading the module we are only
doing parport_unregister_device() decrementing the refcount only once.
We add an parport_put_port() to neutralize the effect of
parport_get_port().
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/auxdisplay/ks0108.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/auxdisplay/ks0108.c b/drivers/auxdisplay/ks0108.c index 5b93852392b8..0d752851a1ee 100644 --- a/drivers/auxdisplay/ks0108.c +++ b/drivers/auxdisplay/ks0108.c @@ -139,6 +139,7 @@ static int __init ks0108_init(void) ks0108_pardevice = parport_register_device(ks0108_parport, KS0108_NAME, NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL); + parport_put_port(ks0108_parport); if (ks0108_pardevice == NULL) { printk(KERN_ERR KS0108_NAME ": ERROR: " "parport didn't register new device\n"); |