Re: [PATCH] call drv->shutdown at rmmod

From: Benjamin Herrenschmidt (benh_at_kernel.crashing.org)
Date: 08/15/03

  • Next message: Krishnakumar. R: "[BUG #568][PATCH-2.6.0-test3] compile failure in drivers/isdn/hisax/diva.c" 
    To: "Eric W. Biederman" <ebiederm@xmission.com>
Date:	15 Aug 2003 18:01:03 +0200

    > Even if kexec is not brought into the picture the devices need to be quiesed on
    > reboot. On x86 and probably other architectures there are 2 ways a reboot can go.
    > 1) The firmware when it regains control toggles the motherboard reset
    > line resetting all of the devices, so nothing we do really makes a difference.
    > 2) The firmware when it regains control tweaks a few things and
    > pretends it was never out of control, and restarts the boot
    > process.
    >
    > When the firmware does not toggle the motherboard reset line during a
    > reboot the firmware case is exactly equivalent to the kexec one.
    >
    > So shutdown needs to quiese things.

    Yup, my point was mostly to say that quiescing for shutdown and putting
    in low power state are 2 different things, and that the "shutdown" name
    for the callback is a bit misleading...

    Ben.

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  • Next message: Krishnakumar. R: "[BUG #568][PATCH-2.6.0-test3] compile failure in drivers/isdn/hisax/diva.c"