linux-kernel - Re: [PATCH] max3100 driver

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Message-ID: <cabda6420809200730u4b2f47e7i4ba811fce09aff17@mail.gmail.com>
Date:	Sat, 20 Sep 2008 16:30:40 +0200
From:	chri <chripell@...il.com>
To:	"Arjan van de Ven" <arjan@...radead.org>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH] max3100 driver

On Sat, Sep 20, 2008 at 3:56 PM, Arjan van de Ven <arjan@...radead.org> wrote:
>
> I do have a question though: what does a signed bitfield of 1 mean?
> I mean.. the variables are "int", so signed.... where will the compiler
> store the sign bit???
>
>

In practice they stored just values 0 and 1 well. 2-complement
representation with 1 bit doesn't have much more space (1 == -1). :-)

Anyway after Andrew comment I stopped using them since I'm too scared:
I'm not sure that it's safe without locking the entire struct.

-- 
Christian Pellegrin, see http://www.evolware.org/chri/
"Real Programmers don't play tennis, or any other sport which requires
you to change clothes. Mountain climbing is OK, and Real Programmers
wear their climbing boots to work in case a mountain should suddenly
spring up in the middle of the computer room."
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