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authorSudip Mukherjee <sudipm.mukherjee@gmail.com>2015-07-20 17:27:21 +0530
committerSasha Levin <sasha.levin@oracle.com>2015-10-27 22:14:50 -0400
commit825cc9616f9b826bb700973b58ae7affa3da5748 (patch)
tree0ac2837f9f37e5a998e700dd8cb6b776070cde71
parent9f6e3432b9b0f30c83174ca3990b747675d9f768 (diff)
downloadlinux-linaro-stable-825cc9616f9b826bb700973b58ae7affa3da5748.tar.gz
auxdisplay: ks0108: fix refcount
[ Upstream commit bab383de3b84e584b0f09227151020b2a43dc34c ] 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(). Cc: <stable@vger.kernel.org> # 2.6.32+ Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
-rw-r--r--drivers/auxdisplay/ks0108.c1
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");