Re: Totally broken PCI PM calls

[Pavel Machek <pavel@suse.cz>]

Hi!

> > > The machines I've tested with relatively generic 2.6.9-rc kernels
> > > don't use BIOS support for S4 when I call swsusp.
> > 
> > first do either
> > echo platform > /sys/power/disk     # for S4
> > echo shutdown > /sys/power/disk     # for poweroff
> > 
> > then do
> > echo disk > /sys/power/state
> 
> Oddly enough, neither of them work lately for me.
> They each resume immediately after writing the
> image to disk.

dmesg would help....

> p.s. I find the /sys/power/disk file mildly cryptic, maybe
>     other folk will find the attached patch slightly more
>     informative about what this interface can do.

> --- 1.19/kernel/power/disk.c	Thu Sep  9 08:45:13 2004
> +++ edited/kernel/power/disk.c	Fri Oct  1 11:01:41 2004
> @@ -282,7 +282,14 @@
>  
>  static ssize_t disk_show(struct subsystem * subsys, char * buf)
>  {
> -	return sprintf(buf,"%s\n",pm_disk_modes[pm_disk_mode]);
> +	return sprintf(buf,"%s%s %s%s %s%s\n",
> +		(pm_disk_mode == pm_ops->pm_disk_mode) ? "*" : "",
> +			pm_disk_modes[pm_ops->pm_disk_mode],
> +		(pm_disk_mode == PM_DISK_SHUTDOWN) ? "*" : "",
> +			pm_disk_modes[PM_DISK_SHUTDOWN],
> +		(pm_disk_mode == PM_DISK_REBOOT) ? "*" : "",
> +			pm_disk_modes[PM_DISK_REBOOT]
> +		);
>  }
>  
>  

Hmm, its interface change, and was not /sys expected to be "one file,
one value"?

								Pavel
-- 
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