Re: Calling suspend() in halt/restart/shutdown -> not a good idea

On Mon, 01 Aug 2005 17:09:31 +0200
Benjamin Herrenschmidt <[email protected]> wrote:

> Hi !
> 
> Why are we calling driver suspend routines in these ? This is _not_ a
> good idea ! On various machines, the mecanisms for shutting down are
> quite different from suspend/resume, and current drivers have too many
> bugs to make that safe. I keep getting all sort of reports of machines
> not shutting down anymore.

For example, my Centrino laptop will restart instead of power down with
-mm kernels.

To "fix" this I can either:
- unplug power. Shutdown works when on battery power.
- attach an external USB hard disk => power down always works.
- remove device_suspend(PMSG_SUSPEND) => power down always works.

Marc
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  - From: Benjamin Herrenschmidt <[email protected]>

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