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authorKevin Hao <kexin.hao@windriver.com>2008-12-01 14:36:16 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-01 19:19:10 +0300
commite5404586a499f7dce915456e85ff94b2df7a3b1c (patch)
tree1e40e93b332e9e9399ab15345dc0c487d6237649 /drivers/usb/serial/console.c
parent296fa7f6a3f3342d40df7713e74246198295654b (diff)
downloadlinux-e5404586a499f7dce915456e85ff94b2df7a3b1c.tar.xz
Add kref to fake tty used by USB console
We alloc a fake tty in usb serial console setup function. we should init the tty's kref otherwise we will face WARN_ON after following invoke of tty_port_tty_set --> tty_kref_get. Signed-off-by: Kevin Hao <kexin.hao@windriver.com> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/usb/serial/console.c')
-rw-r--r--drivers/usb/serial/console.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index 5b20de130e08..5b95009d2fbb 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -135,6 +135,7 @@ static int usb_console_setup(struct console *co, char *options)
err("no more memory");
goto reset_open_count;
}
+ kref_init(&tty->kref);
termios = kzalloc(sizeof(*termios), GFP_KERNEL);
if (!termios) {
retval = -ENOMEM;