On 03/12/15 11:23, Vitaly Kuznetsov wrote: > David Vrabel <[email protected]> writes: > >> Adding the rtc platform device when there are no legacy irqs (no >> legacy PIC) > > No PIC != No legacy IRQs, Hyper-V Gen2 represents such a platform (and > it has RTC on irq8). I've tested this patch against it and it appears to > work because the device is present in ACPI and we initialize it in > drivers/acpi/acpi_cmos_rtc.c, add_rtc_cmos() bails out in the very > beginning as we see PNP0b00 device.
It's not a legacy IRQ if it isn't going via the legacy PIC, it just happens to have the same number. I think it is safe to assume that any machine with a CMOS RTC but no PNP information is also going to have a legacy PIC. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
