From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: Re: [RFC / PATCH] [SPI] get_module while using it. Date: Thu, 24 Apr 2008 11:26:00 -0700 Message-ID: <200804241126.01158.david-b@pacbell.net> References: <20080414194549.GA1363@www.tglx.de> <200804151109.43278.david-b@pacbell.net> <20080424092605.GC7371@www.tglx.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Sebastian Siewior Return-path: In-Reply-To: <20080424092605.GC7371-Hfxr4Dq0UpYb1SvskN2V4Q@public.gmane.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: spi-devel-general-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-spi.vger.kernel.org On Thursday 24 April 2008, Sebastian Siewior wrote: > >And removing the subsidiary devices is supposed to unbind > >them ... though looking at it quickly, I suspect that the > >"spidev" driver doesn't check for unbound devices in its > >various I/O paths. > > Aha. So you mean that the read function which was spidev_read() while > the controller was available should point to something else once the > controller is gone? No, I mean that the issue is most likely a spidev bug. > >So this sounds like a bug in the controller driver, or else > >in how spidev handles unbind. > > I try to look later at spidev once I find something that does a similar > job and works as expected.... They're all over the place, though not with SPI. The unbind method just updates some state that's checked in the I/O ops. - Dave ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone