Messages in this thread | | | Date | Thu, 6 Nov 2003 10:05:24 -0200 (BRST) | From | Marcelo Tosatti <> | Subject | Shared ACPI/USB IRQ working in 2.6 but not in 2.4 |
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Hi,
David van Hoose started having problems with USB on 2.4.23-pre5. USB device and acpi were now using irq 20:
host/usb-ohci.c: USB OHCI at membase 0xe081a000, IRQ 20
/proc/interrupts:
20: 1 IO-APIC-level acpi, usb-ohci
Which makes the USB device not work.
With -pre4 the USB device was using interrupt 9, because acpi failed to find the correct IRQ:
pci_irq-0302 [18] acpi_pci_irq_derive : Unable to derive IRQ for device 00:03.0 PCI: No IRQ known for interrupt pin A of device 00:03.0 host/usb-ohci.c: USB OHCI at membase 0xe081a000, IRQ 9
Now 2.6 assigns interrupt 20 to acpi and usb-ohci just like in 2.4.23-pre5+, but the USB device works!
Anyone has an idea why the interrupt sharing works with 2.6 but not with 2.4?
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