From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benedikt Spranger <b.spranger@linutronix.de>,
netdev@vger.kernel.org,
Alexander Frank <Alexander.Frank@eberspaecher.com>,
"Hans J. Koch" <hjk@hansjkoch.de>,
Holger Dengler <dengler@linutronix.de>
Subject: Re: [PATCH 1/7] uio: add module owner to prevent inappropriate module unloading
Date: Thu, 15 Aug 2013 18:54:46 +0200 [thread overview]
Message-ID: <520D07D6.70407@linutronix.de> (raw)
In-Reply-To: <20130815164227.GC15688@kroah.com>
On 08/15/2013 06:42 PM, Greg Kroah-Hartman wrote:
>> For this to happen you would need a refcount in uio-core which learns
>> that the device is gone and does not invoke any callbacks because the
>> device is gone. Something like you have in USB where you return 0 on
>> reads from ttyUSB after someone pulled the cable.
>
> That happens because we invalidate the filehandle in the tty layer by
> tearing everything down in the usb serial driver. And yes, uio also
> needs to do the same thing, if it doesn't already.
Ah. Do you have a handy pointer where / how you do this?
>
> thanks,
>
> greg k-h
Sebastian
next prev parent reply other threads:[~2013-08-15 16:54 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-13 9:08 [PATCH 0/7] add FlexRay support Benedikt Spranger
2013-08-13 9:08 ` Benedikt Spranger
2013-08-13 9:08 ` [PATCH 1/7] uio: add module owner to prevent inappropriate module unloading Benedikt Spranger
2013-08-13 17:48 ` Greg Kroah-Hartman
2013-08-14 7:19 ` Benedikt Spranger
2013-08-14 16:33 ` Greg Kroah-Hartman
2013-08-15 6:42 ` Benedikt Spranger
2013-08-15 6:59 ` Greg Kroah-Hartman
2013-08-15 7:27 ` Benedikt Spranger
2013-08-15 8:09 ` Greg Kroah-Hartman
2013-08-15 8:18 ` Sebastian Andrzej Siewior
2013-08-15 15:55 ` Greg Kroah-Hartman
2013-08-15 16:03 ` Sebastian Andrzej Siewior
2013-08-15 16:42 ` Greg Kroah-Hartman
2013-08-15 16:54 ` Sebastian Andrzej Siewior [this message]
2013-08-15 17:13 ` Greg Kroah-Hartman
2013-08-13 9:08 ` [PATCH 2/7] uio: Allow to create custom UIO attributes Benedikt Spranger
2013-08-13 17:54 ` Greg Kroah-Hartman
2013-08-13 9:08 ` [PATCH 3/7] mfd: core: copy DMA mask and params from parent Benedikt Spranger
2013-08-13 10:03 ` Lee Jones
2013-08-13 9:08 ` [PATCH 4/7] mfd: add MFD based flexcard driver Benedikt Spranger
2013-08-13 9:55 ` Lee Jones
2013-08-14 8:12 ` Benedikt Spranger
2013-08-14 9:45 ` Lee Jones
2013-08-13 9:08 ` [PATCH 5/7] clocksource: Add flexcard support Benedikt Spranger
2013-08-13 9:08 ` [PATCH 6/7] net: add the AF_FLEXRAY protocol Benedikt Spranger
2013-08-18 18:50 ` Oliver Hartkopp
2013-08-13 9:08 ` [PATCH 7/7] net: add a flexray driver Benedikt Spranger
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