On Fri, 8 Apr 2016, Ulf Hansson wrote: > From power consumption point if view we already discussed this > particular case in an earlier thread, but let me elaborate what I > think one more time: > > Now, this is relevant for removable cards lacking GPIO card detect, as > for other cases and non-removable cards I think we are in agreement > that their is no issue from power consumption point of view, right!? > > 1. The current solution: > - Use MMC_CAP_NEEDS_POLL which makes the mmc core to re-schedule a > work once every second to poll for a card (Why is it one second? Could > we perhaps have that configurable?). The block layer handles media polling for removable block devices, and it is configurable. For example, /sys/block/sr0/events_poll_msecs can be set to control how often the system polls for a disc in my DVD drive. Does MMC do its own polling separate from the block layer? If so, why? Alan Stern -- 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
