Re: Fail to suspend to ram: "Class driver suspend failed for cpu0"

[Kevin Hilman <khilman@ti.com>]

Luke Gong <lukejgong@gmail.com> writes:

> I have a beagle board with OMAP3530. I ported linux-omap-pm2.6.32 to
> this board. When I want to let it suspend to ram, 

This is an old kernel.  Any reason you're not using a newer kernel?

> it fails and I get
> the message "Class driver suspend failed for cpu0"

This is the CPUfreq driver failing to suspend, probably because there is
no CPUfreq driver implemented in your kernel.  Try disabling CPU_FREQ in
your kernel config.

Kevin

> . Here is the log:
>
> root@beagleboard:~# echo mem > /sys/power/state
> PM: Syncing filesystems ... done.
> Freezing user space processes ... (elapsed 0.00 seconds) done.
> Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done.
> Suspending console(s) (use no_console_suspend to debug)
> omapfb omapfb: timeout waiting for FRAME DONE
> Class driver suspend failed for cpu0
> Restarting tasks ... done.
>
> *********************************************
>
> Is there any idea to fix this problem? Thanks.