Comment # 26 on bug 835975 from Gary Greene

I'm thinking that the issue is in the lead up to the following block of code in
xf86platformBus.c, starting at line 382:

static Bool
probeSingleDevice(struct xf86_platform_device *dev, DriverPtr drvp, GDevPtr
gdev, int flags)

When I loaded this in kdbg over a remote X connection on SSH and stepped
through the code, the comparison fell apart with the following values:

drvp->supported_devices.device_id: int 12624 hex value: 0x3150
dev->pdev->device_id: int 38275 hex value: 0x9583

Obviously these will fail. 

It looks like the supported_devices entry is being populated with the wrong
value somewhere along the way.