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    SubjectRe: ISA DMA controller hangs
    On Thu, Jun 16, 2005 at 05:53:47PM +0200, Pierre Ossman wrote:
    > So how do we solve this problem? We should do a master clear and then
    > enable channel 4 after a suspend. The question is where. I see three
    > possible places:
    > * In the suspend code in kernel/power.
    > * In the driver actually handling the suspend (ACPI/APM/etc.).
    > * Via the device layer by adding a device for the DMA controller.
    > Which would be the preferred solution?

    Shouldn't there be a system device for the DMA controller? I think
    that should have appropriate hooks into the power management system
    to do the necessary magic to restore whatever's needed - just like
    we do for the PIC.

    Russell King
    Linux kernel 2.6 ARM Linux -
    maintainer of: 2.6 Serial core
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