linux-kernel - [21/70] firewire: ohci: do not bind to Pinnacle cards, avert panic

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Date:	Mon, 01 Aug 2011 16:18:36 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Stefan Richter <stefanr@...6.in-berlin.de>
Subject: [21/70] firewire: ohci: do not bind to Pinnacle cards, avert panic

2.6.39-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Stefan Richter <stefanr@...6.in-berlin.de>

commit 7f7e37115a8b6724f26d0637a04e1d35e3c59717 upstream.

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.

Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/firewire/ohci.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -264,6 +264,7 @@ static char ohci_driver_name[] = KBUILD_
 #define PCI_DEVICE_ID_AGERE_FW643	0x5901
 #define PCI_DEVICE_ID_JMICRON_JMB38X_FW	0x2380
 #define PCI_DEVICE_ID_TI_TSB12LV22	0x8009
+#define PCI_VENDOR_ID_PINNACLE_SYSTEMS	0x11bd
 
 #define QUIRK_CYCLE_TIMER		1
 #define QUIRK_RESET_PACKET		2
@@ -3170,6 +3171,11 @@ static int __devinit pci_probe(struct pc
 	int i, err;
 	size_t size;
 
+	if (dev->vendor == PCI_VENDOR_ID_PINNACLE_SYSTEMS) {
+		dev_err(&dev->dev, "Pinnacle MovieBoard is not yet supported\n");
+		return -ENOSYS;
+	}
+
 	ohci = kzalloc(sizeof(*ohci), GFP_KERNEL);
 	if (ohci == NULL) {
 		err = -ENOMEM;


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