Re: [PATCH 09/11] bluetooth: hci_ldisc: fix deadlock condition

[Felipe Balbi]

On Thu, Mar 20, 2014 at 12:40:40PM -0700, Marcel Holtmann wrote:
> Hi Felipe,
> 
> > LDISCs shouldn't call tty->ops->write() from within
> > ->write_wakeup().
> > 
> > ->write_wakeup() is called with port lock taken and
> > IRQs disabled, tty->ops->write() will try to acquire
> > the same port lock and we will deadlock.
> > 
> > Reviewed-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
> > Reported-by: Huang Shijie <b32955@xxxxxxxxxxxxx>
> > Signed-off-by: Felipe Balbi <balbi@xxxxxx>
> > ---
> > drivers/bluetooth/hci_ldisc.c | 24 +++++++++++++++++++-----
> > drivers/bluetooth/hci_uart.h  |  1 +
> > 2 files changed, 20 insertions(+), 5 deletions(-)
> 
> I hope these are not causing any conflicts with bluetooth-next /
> linux-next. If not, then I can let Greg take it through tty-next tree.
> 
> Acked-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>

tty-next is already closed, i'll rebase (if necessary) once -rc1 is out
;-)

cheers

-- 
balbi

Attachment: signature.asc
Description: Digital signature