Re: [patch] pci hotplug: add common acpi functions to core

[Greg KH <greg@kroah.com>]

On Tue, Feb 28, 2006 at 04:46:57PM -0800, Kristen Accardi wrote:
> shpchprm_acpi.c and pciehprm_acpi.c are nearly identical.
> In addition, there are functions in both these files that
> are also in acpiphp_glue.c.  This patch will remove duplicate 
> functions from shpchp, pciehp, and acpiphp and move this 
> functionality to pci_hotplug, as it is not hardware specific.  
> Get rid of shpchprm* and pciehprm* files since they are no longer needed.
> shpchprm_nonacpi.c and pciehprm_nonacpi.c are identical, as well
> as shpchprm_legacy.c and can be replaced with a macro.

Looks good, only a minor comment:

> +u8 * acpi_path_name( acpi_handle	handle)

Funky spacing here.

> +int is_root_bridge(acpi_handle handle)
> +{
> +	acpi_status status;
> +	struct acpi_device_info *info;
> +	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
> +	int i;
> +
> +	status = acpi_get_object_info(handle, &buffer);
> +	if (ACPI_SUCCESS(status)) {
> +		info = buffer.pointer;
> +		if ((info->valid & ACPI_VALID_HID) &&
> +			!strcmp(PCI_ROOT_HID_STRING,
> +					info->hardware_id.value)) {
> +			acpi_os_free(buffer.pointer);
> +			return 1;
> +		}
> +		if (info->valid & ACPI_VALID_CID) {
> +			for (i=0; i < info->compatibility_id.count; i++) {
> +				if (!strcmp(PCI_ROOT_HID_STRING,
> +					info->compatibility_id.id[i].value)) {
> +					acpi_os_free(buffer.pointer);
> +					return 1;
> +				}
> +			}
> +		}
> +	}
> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(is_root_bridge);

The name "is_root_bridge" is pretty generic.  Especially as it wants an
acpi handle.  "acpi_is_root_bridge" perhaps?

thanks,

greg k-h