On Wed, Feb 11, 2015 at 10:35:25PM +0000, Suthikulpanit, Suravee wrote:
Besides, how do you support modules with this? Or did I miss something?
Good question.
Ah. I didn¹t think about this part earlier.
IIUC, the current ACPI driver would create modules.alias entry with format: acpi:<HID>:<CID>
What do you think if we append the _CLS of the device using the following format: acpi:<HID>:<CID>:<CLS>
In case of PCI_CLASS_STORAGE_SATA_AHCI, this would become: acpi:::0x10601
Note, that you can have multiple _CIDs, in other words it may look like:
acpi:<HID>:<CID0>:<CID1>:<CLS>
In which case I'm not sure how to match the class. Perhaps use something else than ':' as a separator for class?
BTW, should we add class_mask as well (like PCI does) so that drivers can match part of the class id?