linux-kernel - Re: [PATCH] firewire: ohci: do not bind to Pinnacle or Fujitsu HCI, prevent panic

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Date:	Mon, 11 Jul 2011 01:30:47 +0200
From:	Bjørn Forbord <bforbord@...adpark.no>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	Clemens Ladisch <clemens@...isch.de>,
	Joel bourrigaud <joel@...rrigaud.info>,
	linux1394-devel@...ts.sf.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firewire: ohci: do not bind to Pinnacle or Fujitsu HCI,
 prevent panic

I saw these mails just now and it's late.  I will check my machine and 
answer tomorrow

Best regards

Bjørn

Den 11. juli 2011 01:24, skrev Stefan Richter:
> When firewire-ohci is bound to a Pinnacle MovieBoard, eventually a
> "Register access failure" is logged and an interrupt storm or a kernel
> panic happens.  https://bugzilla.kernel.org/show_bug.cgi?id=36622
>
> Until this is sorted out (if that is going to succeed at all), let's
> just prevent firewire-ohci from touching these devices.
>
> This device with link layer PCI IDs 11bd:0015 and 1394 PHY IDs
> 00000e:086613 is apparently a Fujitsu MB86613 --- hence the PHY IDs.
> Therefore, blacklist the MB86613 too (PCI IDs 10cf:200c).  We only check
> the vendor ID because there is no other Fujitsu OHCI-1394 PCI device
> known besides this one.
>
> Signed-off-by: Stefan Richter<stefanr@...6.in-berlin.de>
> Cc:<stable@...nel.org>
> ---
> Supersedes patch "firewire: ohci: do not bind to Pinnacle cards, prevent panic"
>
>   drivers/firewire/ohci.c |    8 ++++++++
>   1 file changed, 8 insertions(+)
>
> Index: b/drivers/firewire/ohci.c
> ===================================================================
> --- a/drivers/firewire/ohci.c
> +++ b/drivers/firewire/ohci.c
> @@ -260,6 +260,8 @@ static inline struct fw_ohci *fw_ohci(st
>
>   static char ohci_driver_name[] = KBUILD_MODNAME;
>
> +#define PCI_VENDOR_ID_FUJITSU		0x10cf
> +#define PCI_VENDOR_ID_PINNACLE_SYSTEMS	0x11bd
>   #define PCI_DEVICE_ID_AGERE_FW643	0x5901
>   #define PCI_DEVICE_ID_JMICRON_JMB38X_FW	0x2380
>   #define PCI_DEVICE_ID_TI_TSB12LV22	0x8009
> @@ -3202,6 +3204,12 @@ static int __devinit pci_probe(struct pc
>   	int i, err;
>   	size_t size;
>
> +	if (dev->vendor == PCI_VENDOR_ID_FUJITSU ||
> +	    dev->vendor == PCI_VENDOR_ID_PINNACLE_SYSTEMS) {
> +		dev_err(&dev->dev, "Controller type is not yet supported\n");
> +		return -ENOSYS;
> +	}
> +
>   	ohci = kzalloc(sizeof(*ohci), GFP_KERNEL);
>   	if (ohci == NULL) {
>   		err = -ENOMEM;
>
>
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