Subject: Re: [PATCH RFC] isdn/capi: fix up CAPI subsystem workaround locking a bit

From: Michael Buesch <[email-masked]>
Date: Sat, 3 Oct 2009 20:26:22 +0200

On Saturday 03 October 2009 14:06:57 Tilman Schmidt wrote:
> Move calls to handle_minor_send() and handle_minor_recv() out of
> the sections locked by workaround_lock.
> - handle_minor_send() may call another CAPI function via the card
>   driver, deadlocking by trying to take workaround_lock again.
> - handle_minor_recv() calls the receive_buf method of the active
>   line discipline which may sleep.

I remember that handle_minor_send() and/or handle_minor_recv() showed up
in the crash backtraces. So if you move them out of the critical
section, you can as well remove the lock completely.

-- 
Greetings, Michael.