From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <3b7a16b6d7ba18893953f5b1c9978f05@vitanuova.com>
From: C H Forsyth <forsyth@vitanuova.com>
Date: Thu, 18 Nov 2010 18:29:42 +0000
To: lucio@proxima.alt.za, 9fans@9fans.net
In-Reply-To: <2c37a72c526cc8f79c2b35be1c96ec3d@proxima.alt.za>
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit
Subject: Re: [9fans] That deadlock, again
Topicbox-Message-UUID: 852af346-ead6-11e9-9d60-3106f5b1d025

>If it has to wait, it will panic.  Given that, why do the locking at all?

i assume the intention is along these lines:

it's to allow the use during reset of a given driver's
standard functions that normally must qlock, to avoid requiring two copies
of them, with and without the qlock.

after reset, it's illegal to call qlock without a process (notably
in an interrupt function), as it previously was.