On Sunday, December 26, 2010, Ohad Ben-Cohen wrote: > On Sun, Dec 26, 2010 at 4:48 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > Is there a separate handler responsible for powering the device back > > on? What are the names of these handlers? > > wl1271_sdio_power_on() and wl1271_sdio_power_off(). > > If you're taking a look, please do so using the latest code as seen on mmc-next: > > git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc.git mmc-next > > > That's not a race > > It is. > > If system suspend will continue uninterruptedly, and the driver will > be suspended (by the SDIO subsystem), then the device will be powered > down, and everything will work. > > But if something will interrupt the suspend transition _before_ our > driver is suspended (e.g. some other suspend() handler will fail), > then we have a problem, because the device will not be reset as the > driver needs it to be. Now, that's interesting. (It still is not a race, though.) Why does the driver need the device to be reset even though it hasn't been suspeneded yet? Rafael -- 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
