Hi Mark On Thu, 3 May 2012, Mark Brown wrote: > On Thu, May 03, 2012 at 05:05:35PM +0200, Guennadi Liakhovetski wrote: > > Some consumers, e.g., the mmc subsystem, can benefit from an ability to > > check, whether a regulator can switch power on and off. > > You're going to have to expand a lot more on why this is a good idea... I want to use this call in mmc to decide whether or not to set the MMC_CAP_POWER_OFF_CARD mmc capability flag. This flag is used with SDIO cards to decide whether or not to enable runtime PM for them. > Bear in mind that the regulator may be shared by other users so even if > the regulator is flagged as potentially being able to change status that > doesn't mean that it actually can change status. Yes, I think, that's ok. We just need to know, that the card can in principle be powered off. We don't need a guarantee, that we can power it down at any time, when we think we need it. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- 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
