On Mon, Dec 6, 2010 at 10:03 PM, Daniel Drake <[email protected]> wrote: > power_save is done by the bus, not the host, and the host does get its > opportunity to power down via the set_ios callback that comes in > telling it to turn the card off.
yes. In fact, the actual work is being handled by mmc_power_off, and not by the ->power_save() handler (which is not being used at all today). > > Still can't get our card to reset properly though. Tried sprinking > some sdhci_reset and sdhci_reinit calls around, no luck. > > We do know that it can be powered down and up just fine at runtime via > mmc_stop_host then mmc_start_host. Just wondering.. how did you verify this ? rmmod/insmod your host controller ? > So there's something that happens > in that path which does not occur with runtime pm... Then you can probably compare the flow (ftrace ?) and find the difference. > > Daniel > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
