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From: Greg KH <gregkh@suse.de>
To: Neil Armstrong <narmstrong@neotion.com>
Cc: "Hans J. Koch" <hjk@linutronix.de>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] uio: add ioctl callback
Date: Wed, 12 Nov 2008 08:10:09 -0800	[thread overview]
Message-ID: <20081112161009.GA6272@suse.de> (raw)
In-Reply-To: <491AFD7C.8090607@neotion.com>

On Wed, Nov 12, 2008 at 04:59:56PM +0100, Neil Armstrong wrote:
> Hi Hans,
> 
> We need an ioctl callback because we need to query some values only
> available when the irq handler is running.
> For example, we have 3 types of reasons why the irq is triggered and
> these bits are no more available when the irq is cleared.
> 
> The cleanest way to have this very specific information is to have a
> dirty old ioctl returning this data.

Do you also have a patch for your UIO driver that implements this
functionality?

I really don't think we want to add an ioctl callback, perhaps you could
just use a sysfs file for this?

thanks,

greg k-h

  reply	other threads:[~2008-11-12 16:18 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-12 15:40 [PATCH] uio: add ioctl callback Neil Armstrong
2008-11-12 15:49 ` Hans J. Koch
2008-11-12 15:59   ` Neil Armstrong
2008-11-12 16:10     ` Greg KH [this message]
2008-11-12 16:23     ` Hans J. Koch
2008-11-12 16:43       ` Neil Armstrong
  -- strict thread matches above, loose matches on Subject: below --
2008-11-12 14:11 Neil Armstrong
2008-11-12 14:33 ` Marco Stornelli

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