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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>
hifive-unleashed-5.1
Kevin Hao 2008-12-01 11:36:16 +00:00 committed by Linus Torvalds
parent 296fa7f6a3
commit e5404586a4
1 changed files with 1 additions and 0 deletions
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drivers/usb/serial/console.c
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@ -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;