From: Ohad Ben-Cohen Date: Fri, 19 Nov 2010 07:29:09 +0000 (+0200) Subject: mmc: sdio: fix runtime PM anomalies by introducing MMC_CAP_POWER_OFF_CARD X-Git-Tag: v2.6.37-rc4~24^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ed919b0125b26dcc052e44836f66e7e1f5c49c7e;p=pandora-kernel.git mmc: sdio: fix runtime PM anomalies by introducing MMC_CAP_POWER_OFF_CARD Some board/card/host configurations are not capable of powering off the card after boot. To support such configurations, and to allow smoother transition to runtime PM behavior, MMC_CAP_POWER_OFF_CARD is added, so hosts need to explicitly indicate whether it's OK to power off their cards after boot. SDIO core will enable runtime PM for a card only if that cap is set. As a result, the card will be powered down after boot, and will only be powered up again when a driver is loaded (and then it's up to the driver to decide whether power will be kept or not). This will prevent sdio_bus_probe() failures with setups that do not support powering off the card. Reported-and-tested-by: Daniel Drake Reported-and-tested-by: Arnd Hannemann Signed-off-by: Ohad Ben-Cohen Signed-off-by: Chris Ball --- Reading git-diff-tree failed