Date: Thu, 17 Feb 2005 07:48:47 -0700 (MST)
From: Zwane Mwaikambo <zwane@arm.linux.org.uk>
To: Davide Rossetti <davide.rossetti@roma1.infn.it>
cc: linux-kernel@vger.kernel.org
Subject: Re: rmmod while module is in use
In-Reply-To: <Pine.LNX.4.61.0502170739530.26742@montezuma.fsmlabs.com>
Message-ID: <Pine.LNX.4.61.0502170748170.26742@montezuma.fsmlabs.com>
References: <4214926B.3030707@roma1.infn.it> <Pine.LNX.4.61.0502170739530.26742@montezuma.fsmlabs.com>
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On Thu, 17 Feb 2005, Zwane Mwaikambo wrote:

> On Thu, 17 Feb 2005, Davide Rossetti wrote:
> 
> > maybe RTFM...
> > a module:
> > - char device driver for..
> > - a PCI device
> > 
> > any clue as to how to protect from module unloading while there is still some
> > process opening it??? have I to sleep in the remove_one() pci driver function
> > till last process closes its file descriptor???
> > 
> > static void __devexit apedev_remove_one(struct pci_dev *pdev)
> > {
> >    ApeDev* apedev = pci_get_drvdata(pdev);
> > 
> >    if(test_bit(APEDEV_FLAG_OPEN, &apedev->flags)) {
> >        PERROR("still open flag on!!! (flags=0x%08x)\n", apedev->flags);
> > 
> >        // sleep here till it gets closed...
> > 
> >    }
> >    ...
> > }
> > 
> > static struct pci_driver apedev_driver = {
> >    .name     =  DEVNAME,
> >    .id_table =  apedev_pci_tbl,
> >    .probe    =  apedev_init_one,
> >    .remove   =  __devexit_p(apedev_remove_one),
> > };
> 
> Add .module = THIS_MODULE to your file_operations.
      ^^^^^^^

That should be .owner

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