On Fri, Aug 7, 2015 at 4:21 AM, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Mon, Aug 03, 2015 at 08:09:35PM +0100, Russell King - ARM Linux wrote: >> Right now, there seems to be a move to convert _all_ AMBA device drivers >> to become dual-drivers: an amba bus driver and a platform driver. Is >> that something you really want to see, irrespective of ACPI issues? > > Ick, no, I don't think that's wise at all. Why not just make the needed > resources availble to _all_ bus drivers, then it doesn't matter if it's > AMBA, or ACPI, or USB, or anything else? Amen to that. > I thought that is what some recent patches did to the acpi/of core, but > maybe I was mistaken. I think you're referring to the initiative to provide query functions that will work the same on device trees and ACPI devices, that is to get a key/value from a certain struct device * no matter if it came from a DT or ACPI. This is about how the core hardware description spawns devices. While DT will (correctly) spawn AMBA devices, the ACPI code apparently doesn't. But it should. of_amba_device_create() even shows exactly how to do it. What I fear is that ACPI actually has no way to tell whether a device is an AMBA device but rather thinks the whole world consists of platform_devices, and then *THAT* needs to be fixed. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
