[PATCH] serial/amba-pl011: Return early in deadlock work-around if there is no tty

[Linus Walleij]

On Fri, Feb 17, 2012 at 8:32 AM, Kalle Vahlman <kalle.vahlman at movial.com> wrote:

> The first amba port does not always have an attached tty, which will
> result in a crash if the work-around is activated.
>
> This seems to be the case for example on Snowball which has no modem
> hw, which seems to be the main use-case for this work-around.

Kalle can you _please_ send this to the upstream kernel?

linux-serial at vger.kernel.org

And for this patch certainly also Cc: stable at kernel.org

This is such a small piece that it's just to send off an email, you
can test-apply
it on linux-next for a quick compile test.

Yours,
Linus Walleij