linux-kernel - Re: Kernel deferring driver 'close' call: workaround?

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Message-ID: <20110126131703.3033ad87@lxorguk.ukuu.org.uk>
Date:	Wed, 26 Jan 2011 13:17:03 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Evan Lavelle <sa212+lkml@...onix.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Kernel deferring driver 'close' call: workaround?

> 'strace' shows that the 'close' succeeds, but the driver debug output 
> shows that the driver close/release (step 2) is not called before the 
> next open (step 3), so the open fails.

I imagine the user has a bug in their app. The close method is called on
the final close of the handle. That means if for example you do something
like fork off a child process and forget to close the handle then it
won't actually close down until the final user closes it.

Alan
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