> -----Original Message----- > From: Alan Cox [mailto:alan@xxxxxxxxxxxxxxxxxxx] > Sent: Wednesday, October 27, 2010 9:32 AM > To: Ghorai, Sukumar > Cc: Chris Ball; Linus Walleij; Nicolas Pitre; Adrian Hunter; linux- > mmc@xxxxxxxxxxxxxxx; Kadiyala, Kishore; Chikkature Rajashekar, > Madhusudhan; S, Venkatraman > Subject: Re: [RFC] MMC: Proposals on reworking clock and power management > > > 2. Ideally host-driver driver should not tell the core to shut down > > the upper layers, instead the core should decide when to > > "disabled clock or cut the power". > > How will the core know ? > Are you saying that MMC core needs to be adapted first to RUNTIME PM? > I actually think you are simply perpetuating the mess in the existing MMC > driver where everything is driven by a core which as a result is a twisty > maze of exceptions and flags to say "except for this" "except for that". > > The core MMC code only knows when the *core* parts are no longer > requiring power. It shouldn't know about anything deeper and if you are > using the runtime PM layer the runtime PM refcounting can do all your > work. > > Alan -- 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
