Re: [PATCH] PCI: add PCI Express Port Bus Driver subsystem

[Greg KH <greg@kroah.com>]

On Mon, Jan 17, 2005 at 02:01:52PM -0800, Greg KH wrote:
> +int pcie_port_device_register(struct pci_dev *dev)
> +{
> +	struct pcie_device *parent;
> +	int status, type, capabilities, irq_mode, i;
> +	int vectors[PCIE_PORT_DEVICE_MAXSERVICES];
> +	u16 reg16;
> +
> +	/* Get port type */
> +	pci_read_config_word(dev, 
> +		pci_find_capability(dev, PCI_CAP_ID_EXP) + 
> +		PCIE_CAPABILITIES_REG, &reg16);
> +	type = (reg16 >> 4) & PORT_TYPE_MASK;
> +
> +	/* Now get port services */
> +	capabilities = get_port_device_capability(dev);
> +	irq_mode = assign_interrupt_mode(dev, vectors, capabilities);
> +
> +	/* Allocate parent */
> +	parent = alloc_pcie_device(NULL, dev, type, 0, dev->irq, irq_mode);
> +	if (!parent) 
> +		return -ENOMEM;
> +	
> +	status = device_register(&parent->device);
> +	if (status) {
> +		kfree(parent);
> +		return status;
> +	}


This puts all of the pcie "port" structures in /sys/devices/  Shouldn't
you make the parent of the device you create point to the pci_dev
structure that's passed into this function?  That would make the sysfs
tree a lot saner I think.

thanks,

greg k-h