The vt layer isn't safely handling reference counts to tty object on the input
side. Add a tty port structure to the vt layer in order to implement this using
the standard helpers.
Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/char/vt.c | 2 ++
include/linux/console_struct.h | 2 ++
2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index c5e30e3..e5269cc 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -772,6 +772,7 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */
if (!vc)
return -ENOMEM;
vc_cons[currcons].d = vc;
+ tty_port_init(&vc->port);
INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
visual_init(vc, currcons, 1);
if (!*vc->vc_uni_pagedir_loc)
@@ -2909,6 +2910,7 @@ static int __init con_init(void)
for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
vc_cons[currcons].d = vc = kzalloc(sizeof(struct vc_data), GFP_NOWAIT);
INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
+ tty_port_init(&vc->port);
visual_init(vc, currcons, 1);
vc->vc_screenbuf = kzalloc(vc->vc_screenbuf_size, GFP_NOWAIT);
vc_init(vc, vc->vc_rows, vc->vc_cols,
diff --git a/include/linux/console_struct.h b/include/linux/console_struct.h
index 38fe59d..57e83f1 100644
--- a/include/linux/console_struct.h
+++ b/include/linux/console_struct.h
@@ -21,6 +21,8 @@ struct vt_struct;
#define NPAR 16
struct vc_data {
+ struct tty_port port; /* Upper level data */
+
unsigned short vc_num; /* Console number */
unsigned int vc_cols; /* [#] Console size */
unsigned int vc_rows;
--
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