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    SubjectRe: tristate and bool not enogh for Kconfig anymore
    Christoph Hellwig wrote:
    > On Mon, Oct 22, 2007 at 04:32:19PM +0600, Alexander E. Patrakov wrote:
    >
    >>> That's wrong. You can load firmware from the initramfs even if the
    >>> driver is built in. There is no valid reason why a driver shouldn't
    >>> be allowed to be built in.
    >>>
    >> Could you please explain how this is supposed to work?
    >>
    >> As far as I understand, the kernel initializes all built-in drivers, and
    >> only then starts /init in initramfs (which is then supposed to start
    >> udevd and load firmware) - but that's too late.
    >>
    >
    > populate_rootfs is a rootfs_initcall which happens before all the driver
    > initcalls.
    >

    Correct, but irrelevant. The firmware indeed gets unpacked to rootfs
    before all driver initcalls, but stays as a dead weight during them,
    because udev (started by /init, which happens in init_post() called by
    kernel_init() after all initcalls) is needed to load this firmware.

    Yes, there is a call to usermodehelper_init() before the initcalls in
    do_basic_setup(), this does mean that firmware can be loaded by means of
    the old and obsolete /sbin/hotplug mechanism, but who has /sbin/hotplug now?

    --
    Alexander E. Patrakov
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