mmc: core: Fix PowerOff Notify suspend/resume
Modified the mmc_poweroff to resume before sending the poweroff notification command. In sleep mode only AWAKE and RESET commands are allowed, so before sending the poweroff notification command resume from sleep mode and then send the notification command. PowerOff Notify is tested on a Synopsis Designware Host Controller (eMMC 4.5). The suspend to RAM and resume works fine. Signed-off-by: NGirish K S <girish.shivananjappa@linaro.org> Tested-by: NGirish K S <girish.shivananjappa@linaro.org> Reviewed-by: NSaugata Das <saugata.das@linaro.org> Signed-off-by: NChris Ball <cjb@laptop.org>
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