On Sun, Nov 18, 2012 at 09:07:22PM -0500, Alan Stern wrote: > Hey... Hey, again. :P > > So, at least for SATA, I think what autopm can do is... > > > > * Trigger zpodd if possible. > > > > * Trigger suspend iff polling isn't happening on the device. > > That sums it up nicely. Of course, the PM core is unaware of details > such as media polling. What we can do is have the SATA runtime-idle > method return -EBUSY if the device isn't a ZPODD and if polling is > enabled. Unfortunately I don't think there's any way currently to > trigger autopm when the user turns off polling. Maybe something could > be added to the appropriate sysfs handler. Given that genhd event polling and PM are likely to interact with each other, I think it would be a good idea to implement a proper way for the two to communicate. Dunno what it should be tho. The tricky part would be mapping the block device to the underlying hardware one. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
