On Wed, 31 Dec 2008, Sriram V wrote: > Hi, > I am trying to test pm on my platform/board. > I am using the latest linux kernel - 2.6.28-rc6 > PM Support exists in my mmc driver and suspend and resume work fine. > > With rootfs mounted via NFS. I am able to do > $ echo -n mem > /sys/power/state > > The above works. It successfully calls suspend and resume of sdmmc driver. > > However, the same does not work if i have mounted the SDMMC card > with rootfs on NFS. > > The kernel hangs, when i try to do > $ echo -n mem > /sys/power/state > > In this case suspend and resume functions of the driver are not called > at all. (I gave a couple of debug prints at the beginning of suspend and resume > and they didnot get print) > > Same behaviour is observed when i boot out of SDMMC card. Suspend/Resume > dont work. The kernel hangs. > > I get the messages in both case when i suspend-to-ram. > > 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) > > > I am not sure if this has to do with SD/MMC driver or something else. What do you seen when you boot with "no_console_suspend" You may also want to check out Documentation/power/basic-pm-debugging.txt" cheers, -- Len Brown, Intel Open Source Technology Center _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
