Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 25/29] auxdisplay: ks0108: fix refcount | Date | Sat, 19 Sep 2015 10:27:47 -0700 |
| |
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
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>
--- drivers/auxdisplay/ks0108.c | 1 + 1 file changed, 1 insertion(+)
--- 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");
| |