Message-ID: <42037DAA.6030007@microgate.com>
Date: Fri, 04 Feb 2005 07:50:34 -0600
From: Paul Fulghum <paulkf@microgate.com>
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To: =?ISO-8859-15?Q?Martin_K=F6gler?= <e9925248@student.tuwien.ac.at>
CC: Andrew Morton <akpm@osdl.org>, rmk+lkml@arm.linux.org.uk,
       linux-kernel@vger.kernel.org
Subject: Re: Deadlock in serial driver 2.6.x
References: <20050126132047.GA2713@stud4.tuwien.ac.at> <20050126231329.440fbcd8.akpm@osdl.org> <1106844084.14782.45.camel@localhost.localdomain> <20050130164840.D25000@flint.arm.linux.org.uk> <1107157019.14847.64.camel@localhost.localdomain> <20050131004857.07f5e2c4.akpm@osdl.org> <1107332396.14847.112.camel@localhost.localdomain> <20050203102112.06c06fe7.akpm@osdl.org> <20050204110725.GA16534@stud4.tuwien.ac.at>
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Martin K?gler wrote:
> As a temporary workaround, dropping the lock should also work:

This looks good to me, and seems much more reasonable
that changing driver interfaces.

Treat tty_flip_buffer_push(tty) as something that
can call back into your driver (which *is* the case for low_latency),
so don't do anything that can cause a deadlock
when you call it.

-- 
Paul Fulghum
Microgate Systems, Ltd.
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