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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Paulo Fortuna Carvalho <pricardofc@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Subject: Re: Hot add a PCIe device driver upon hotplug event
Date: Tue, 27 Jan 2015 09:11:01 -0800	[thread overview]
Message-ID: <20150127171101.GA18912@kroah.com> (raw)
In-Reply-To: <CAH9N0t-_JbwtZeU+Kyds8=NX=CBT-+_ecKiUWPKr1zXiLKm0vQ@mail.gmail.com>

On Tue, Jan 27, 2015 at 05:06:33PM +0000, Paulo Fortuna Carvalho wrote:
> >Is it possible to cancel somehow the remove procedure if the device is
> >in use?
> 
> >Nope, you could have physically removed the device, so we can't cancel
> >that :)
> 
> ok.
> 
> >When we are using the device and remove occurs the kernel crashes.
> >Then we need to fix the kernel, what driver is crashing, and where?
> 
> The driver of the ATCA acquisition card crashes in a read data function
> through DMA accesses.

Do you have an oops callback?  All read functions need to be able to
handle a 0xff read when the device is removed and react properly.

thanks,

greg k-h

  parent reply	other threads:[~2015-01-27 17:11 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-12 11:42 Hot add a PCIe device driver upon hotplug event Paulo Fortuna Carvalho
2015-01-12 16:58 ` Bjorn Helgaas
2015-01-12 17:26   ` Paulo Fortuna Carvalho
2015-01-12 17:41     ` Bjorn Helgaas
     [not found]       ` <CAH9N0t-EP9p2V3JMht1F_EyK+bOdiiH1krPLrsTMDQ_961damQ@mail.gmail.com>
2015-01-13 17:29         ` Bjorn Helgaas
     [not found]   ` <CAH9N0t8s+kcG_Qok0wpoDz9jzwvPk_QmBK_p-qbACZJjrr+iVQ@mail.gmail.com>
2015-01-22 17:41     ` Bjorn Helgaas
     [not found]       ` <CAH9N0t-+gog9wNFo7hqhzrWuttrRyf5HjjHciFrDGz1rZUiUfw@mail.gmail.com>
2015-01-22 22:20         ` Bjorn Helgaas
2015-01-23 11:35           ` Paulo Fortuna Carvalho
2015-01-23 14:36             ` Bjorn Helgaas
2015-01-27 16:31               ` Paulo Fortuna Carvalho
2015-01-27 16:43                 ` Bjorn Helgaas
2015-01-27 16:47                 ` Greg Kroah-Hartman
2015-01-27 17:10                   ` Paulo Fortuna Carvalho
     [not found]                   ` <CAH9N0t-M2QfW84Jd3fRaLr+NdFvZEkjXzrXsgncoLhtYv-xQ3g@mail.gmail.com>
     [not found]                     ` <CAH9N0t-_JbwtZeU+Kyds8=NX=CBT-+_ecKiUWPKr1zXiLKm0vQ@mail.gmail.com>
2015-01-27 17:11                       ` Greg Kroah-Hartman [this message]
     [not found]               ` <54C5EF11.8070604@desy.de>
2015-01-27 16:50                 ` Bjorn Helgaas
2015-01-28  7:51                   ` Ludwig Petrosyan

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