On Tue, Dec 28, 2010 at 1:25 PM, Arnd Hannemann <arnd@xxxxxxxxxx> wrote: > On some boards card power is hard wired to the slot > and active regardless of host controller state. ... > This was observed on AP4EVB with tmio_mmc and a b43 based > SDIO card: > http://marc.info/?l=linux-mmc&m=128854536521274&w=2 Do you mean that your card is always powered on regardless of mmc_power_off() invocations ? I always wondered why SDIO runtime PM didn't work with your card, so thanks for the follow up on this. That said, if you card can't be powered down, then it shouldn't be MMC_CAP_POWER_OFF_CARD at all (which literally means that the card can be powered down). And if it isn't MMC_CAP_POWER_OFF_CARD, then runtime PM will stay disabled for the card, so the problem you describe can't happen. Thanks, Ohad. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
