[PATCH] TTY: hvcs: fix missing unlock on error in hvcs_initialize()
From: Wei Yongjun <hidden>
Date: 2012-10-22 04:43:02
Also in:
lkml
Subsystem:
hypervisor virtual console driver, the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
From: Wei Yongjun <redacted> Add the missing unlock on the error handling path in function hvcs_initialize(). Signed-off-by: Wei Yongjun <redacted> --- drivers/tty/hvc/hvcs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index cab5c7a..744c3b8 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c@@ -1496,8 +1496,10 @@ static int __devinit hvcs_initialize(void) num_ttys_to_alloc = hvcs_parm_num_devs; hvcs_tty_driver = alloc_tty_driver(num_ttys_to_alloc); - if (!hvcs_tty_driver) + if (!hvcs_tty_driver) { + mutex_unlock(&hvcs_init_mutex); return -ENOMEM; + } if (hvcs_alloc_index_list(num_ttys_to_alloc)) { rc = -ENOMEM;