Grab a reference to the tty when removing the hvcs to ensure
it does not get freed unexpectedly.
Signed-off-by: Brian King <brking@xxxxxxxxxxxxxxxxxx>
---
drivers/tty/hvc/hvcs.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index 9c5887d0c882..b28ddfc46e42 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c
@@ -802,7 +802,7 @@ static void hvcs_remove(struct vio_dev *dev)
spin_lock_irqsave(&hvcsd->lock, flags);
- tty = hvcsd->port.tty;
+ tty = tty_port_tty_get(&hvcsd->port);
spin_unlock_irqrestore(&hvcsd->lock, flags);
@@ -819,8 +819,10 @@ static void hvcs_remove(struct vio_dev *dev)
* hvcs_hangup. The tty should always be valid at this time unless a
* simultaneous tty close already cleaned up the hvcs_struct.
*/
- if (tty)
+ if (tty) {
tty_hangup(tty);
+ tty_kref_put(tty);
+ }
printk(KERN_INFO "HVCS: vty-server@%X removed from the"
" vio bus.\n", dev->unit_address);
--
2.31.1
