On Fri, May 04, 2012 at 00:16:32, Mark A. Greer wrote: [...] > > > > So, if I understood this correctly, it's effectively like blocking a low > > power > > state transition (here wfi execution) when EMAC is active? > > Assuming "it" is my patch, correct. >
Recently I was thinking about how to get certain drivers to disallow some or all low power states and to me this also seems to fall in a similar category. One of the suggestions that I got was to check if the 'wakeup' entry associated with the device under sysfs could be leveraged for this. The PM code could maintain a whitelist (or blacklist) of devices and it decides the low power state to enter based on the 'wakeup' entries associated with these devices. In this particular case, maybe the driver could simply set this entry to non-wakeup capable when necessary and then let the PM code take care of skipping the wfi execution. Thoughts/brickbats welcome :) Regards, Vaibhav -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
