linux-kernel - Re: [PATCH] rtc: remove BKL for ioctl()

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Date:	Wed, 25 Jun 2008 15:58:45 -0700
From:	David Brownell <david-b@...bell.net>
To:	Jonathan Corbet <corbet@....net>
Cc:	lkml <linux-kernel@...r.kernel.org>, rtc-linux@...glegroups.com,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH] rtc: remove BKL for ioctl()

On Wednesday 25 June 2008, Jonathan Corbet wrote:
> On Sun, 22 Jun 2008 19:55:42 -0700
> David Brownell <david-b@...bell.net> wrote:
> 
> > Remove implicit use of BKL in ioctl() from the RTC framework.
> 
> Looks good, I'll happily put it into the bkl-removal tree.

It's in MM now too ... are all the bkl-removal patches going in
at once, or will they be merged through their subsystems?


> One question, though:
> 
> > +	err = mutex_lock_interruptible(&rtc->ops_lock);
> > +	if (err)
> > +		return -EBUSY;
> > +
> 
> Shouldn't that be -EINTR?

I was just copying that usage from drivers/rtc/interface.c ...
all users there return -EBUSY.

If it's wrong in this patch it's probably wrong there too.
I suspect EINTR is the answer in all cases.

- Dave
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